What Are Thinking Errors

Why your brain distorts reality and what to do about it.

Your brain runs mental shortcuts. Some help; others distort reality and drag your mood down with them.

These distortions are called thinking errors. They are not character flaws or signs of weakness - they are automatic patterns any brain can fall into, especially under stress. The problem is that when you accept a distorted thought as fact, you feel and act as if it is true. That shapes your choices, your relationships, and how you see yourself.

This course gives you a clear taxonomy - nine named patterns - so you can catch a thinking error in the moment, understand what kind it is, and generate a more balanced thought in its place. Naming the pattern is the first step. Once you can see it, you can work with it.

Quiz

What is the main problem with accepting a thinking error as fact?

02

Ignoring the Good

How selective attention filters out the positive without you noticing.

You sit an exam, get 14 out of 20 questions right, and go home focusing on the 6 you missed. Your brain did not tally the full picture - it selected the negatives and filtered the rest out. That is ignoring the good.

This error shows up whenever you discount a success, brush off a compliment, or replay a single criticism while forgetting the surrounding context. The event itself is often mixed - genuinely mixed - but only the difficult part registers as real.

Situation	What actually happened	What ignoring the good sounds like
Test result	14 correct, 6 wrong	"I only got 6 wrong - I'm terrible at this."
Feedback at work	Positive comments plus one suggestion	"My manager pointed out a mistake - I must be doing badly."
Social event	Several good conversations, one awkward moment	"That was awful - I embarrassed myself the whole time."

The pattern is worth watching for because it quietly distorts your self-assessment over time. You can end a genuinely good day convinced it was a failure.

Quiz

Which of these best describes the 'ignoring the good' thinking error?

03

Quick Check: Ignoring Good

Spot the ignoring-the-good pattern across three everyday scenarios.

Three short scenarios below. For each one, decide whether the person is ignoring the good - or thinking something else entirely.

Take your time with each. The goal is to notice the pattern, not just guess the label.

Quiz

Priya scores 85% on her presentation but tells a friend: "I stumbled on two slides - the whole thing was a mess." Which thinking error is this?

Quiz

After a football match his team won, Marcus says: "I missed one shot - I played terribly." What is happening here?

04

Blowing Things Up

How small setbacks get catastrophised into disasters.

A low grade on one test becomes proof your future is ruined. A single argument means a friendship is over. Something genuinely difficult gets inflated until it feels catastrophic - that is blowing things up.

The distortion works in two directions. It magnifies the problem itself - "this is the worst thing that could happen" - and it collapses the future into a single awful outcome, leaving no room for recovery or context.

What actually happened	Blowing things up sounds like
Failed one test	"My whole future is ruined."
Made an error at work	"I'm going to get fired. Everything is falling apart."
Had an argument with a friend	"This friendship is completely destroyed."

Notice that the original event is often real - you did fail the test, the argument did happen. Blowing things up does not invent problems; it inflates them past their actual size and strips away any sense that things can improve.

Quiz

What distinguishes 'blowing things up' from simply acknowledging a difficult situation?

05

Quick Check: Blowing Up

Test whether you can spot catastrophising in context.

Two scenarios. In each one, decide whether the person is blowing things up - or whether something else is going on.

Quiz

After dropping her phone and cracking the screen, Janelle says: "This is a complete disaster. My whole day is ruined and things like this always happen to me." What is this?

Quiz

Tom misses a penalty in a football match and thinks: "I've let the whole team down. They'll never trust me with that again." Which error is at work?

06

Fortune Telling and Mind Reading

Two ways assumption stands in for evidence in daily life.

Both of these errors share a structure: you substitute assumption for evidence and treat the assumption as certain.

Fortune telling is predicting a negative future with false certainty. "I'm going to fail this exam." "No one will want to talk to me at the party." You don't know - but the brain presents the prediction as settled fact, and you prepare for it accordingly.

Mind reading points in a different direction: it assumes you know what another person is thinking, usually something negative about you. "She didn't reply - she must be angry." "They asked me that question because they think I don't know what I'm doing."

Error	Direction	Example
Fortune telling	About the future	"I'll mess up the interview - there's no point preparing."
Mind reading	About another person's thoughts	"He looked away - he must think I'm boring."

The useful question for both is the same: what is the actual evidence? Not the feeling of certainty - the evidence. Without it, you are treating a guess as a given.

Quiz

What do fortune telling and mind reading have in common?

Quiz

A friend does not reply to your message for a few hours and you think: "She must be furious with me." Which thinking error is this?

07

Quick Check: Predictions

Distinguish fortune telling from mind reading across real scenarios.

These scenarios each involve one of the two prediction-based errors. Identify which - and notice what gives it away.

Quiz

Before a job interview, Sam thinks: "I already know I'm going to blank on the questions. It's not going to go well." What is this?

Quiz

During a team meeting, Leila notices her manager frowning and thinks: "He disapproves of everything I'm saying." Which error is this?

08

Reframing to Balanced Thoughts

A three-step method to find a more accurate thought.

Spotting a thinking error is only half the work. The other half is replacing the distorted thought with one that is more accurate - not more positive, just more honest.

Name the error. Identify which pattern you are in - ignoring the good, blowing things up, fortune telling, mind reading, or another. Naming it creates a small but important distance between you and the thought.
Ask for the evidence. What actually supports this thought? What contradicts it? Treat it like a claim that needs checking, not a feeling that proves itself.
Generate a balanced alternative. Write or say out loud a thought that accounts for all the evidence - not just the part your brain defaulted to. It does not have to be optimistic. It just has to be fair.

Original thought	Error	Balanced alternative
"I failed one question - I'm terrible at this."	Ignoring the good	"I got most of it right. One question I struggled with doesn't define my ability."
"This mistake will end my career."	Blowing things up	"This is a setback. It matters, but it's one event and I can address it."
"I already know the interview will go badly."	Fortune telling	"I don't know how it will go. I can prepare and see what happens."
"She didn't text back - she must be angry with me."	Mind reading	"I don't know why she hasn't replied. There are lots of possible reasons."

The balanced alternative does not have to feel true immediately. The point is to put a more accurate thought into the space where the distorted one was - and over time, that changes what your brain defaults to.

Quiz

In the three-step reframing method, what is the purpose of step two - asking for the evidence?

Download

Your Thinking Errors Reference

Full TherapistAid guide to all nine thinking errors - keep it close.

Open download

10

Work on This with Support

Book a session to apply these tools to your own patterns.

You now have the framework - the names, the patterns, and a method for generating balanced alternatives. Most people find that applying it to their own specific thoughts is where the real work happens.

If you want guided practice - working through a real thought you keep getting stuck on, or building the habit of catching errors in the moment - book a session below. We can apply these tools directly to what is actually going on for you.

And that's a wrap. Well done.