How Does CBT Work? An introduction to Cognitive Behavioural Therapy
If you’ve been thinking about starting therapy, you may have come across Cognitive Behavioural Therapy (CBT). But what exactly is CBT, and what does it involve?
CBT is a structured, evidence-based talking therapy that explores the connection between our thoughts, feelings (both emotions and physical sensations) and behaviours. It can be helpful for a range of difficulties, including anxiety, low mood, OCD, phobias, social anxiety and low self-esteem.
CBT is not just about talking through your difficulties. It’s about helping you understand what might be keeping you stuck and learning practical skills to help you move forward. A key part of therapy is helping you become your own therapist – giving you the knowledge, understanding and tools to recognise unhelpful patterns, try different ways of responding and feel more confident managing challenges in your everyday life. The hope is that, over time, you feel better equipped to support yourself, even after therapy has ended.
What is Cognitive Behavioural Therapy?
CBT is based on the idea that our thoughts, feelings and behaviours are connected.
For example, if you are worried about being judged by other people, you might think:
“They probably think I’m being awkward.”
This thought might lead to feelings of anxiety or embarrassment and physical sensations such as a racing heart or feeling tense. In response, you might avoid social situations, stay quiet or replay conversations afterwards to work out whether you did something wrong.
These responses can make sense in the moment, but they often keep anxiety going over time.
CBT helps you understand these patterns and consider whether there are different ways of responding.
What happens in CBT?
CBT is collaborative, meaning that you and your therapist work together to understand what is happening and decide what you would like to work towards.
Early sessions might involve exploring:
What you are struggling with
When your difficulties tend to happen
Your thoughts, feelings and physical sensations
Behaviours such as avoidance, checking or reassurance seeking
What might be maintaining the problem
What you would like to change
Your therapist will then develop a formulation with you. This is a way of making sense of what you are experiencing – looking at how your difficulties may have developed, and what could be keeping them going now.
Together, you might explore experiences from your past and how these have influenced the way you see yourself, other people and the world. This can include looking at core beliefs, such as “I’m not good enough” or “I can’t cope”, as well as your rules for living, such as “I must always get things right” or “I need to keep everyone happy”.
Understanding these patterns can help you make sense of why you think, feel and behave in certain ways. It also helps you and your therapist identify where you could make changes and begin to develop new, more helpful ways of responding.
Does CBT involve changing your thoughts?
There is a misconception that CBT teaches you to simply replace negative thoughts with positive ones. Instead, it involves learning to notice your thoughts and consider whether they are helpful, accurate or based on assumptions. You might explore the evidence for a particular thought and consider whether there are alternative ways of looking at the situation.
The aim isn't to force yourself to think positively. It's to develop a more flexible way of responding to your thoughts.
Why are behaviours important in CBT?
CBT also focuses on what we do.
When something makes us anxious, it is natural to want to avoid it or find ways to feel safer. This might involve avoiding certain situations, seeking reassurance, repeatedly checking something or putting things off – what we call safety behaviours.
Although these behaviours may reduce anxiety in the short term, they can reinforce the belief that the situation is dangerous or that we can't cope.
Therefore, your therapist may work with you to gradually change behaviours and try out new ways of responding. Depending on the difficulty you're experiencing, this might include behavioural experiments, behavioural activation or Exposure and Response Prevention (ERP).
Understanding feelings and emotional regulation
Another important part of CBT is developing a better understanding of your emotions and what you need when feelings become difficult to manage.
When we are struggling with anxiety, low mood or stress, it can be easy to focus on the immediate problem without noticing what is happening more broadly. You might be tired, not eating regularly, struggling to switch off, spending very little time doing things you enjoy, or feeling disconnected from other people. These basic needs can have a significant impact on how we feel and how well we cope.
As part of therapy, you might look at these foundations that support your emotional wellbeing. This isn't about having a perfect routine, but about understanding what your mind and body need to function well.
You might also explore your window of tolerance – the zone where you are able to manage emotions and respond to situations without feeling overwhelmed or shut down. When we move outside this window, we might feel highly anxious, overwhelmed or on edge, or alternatively numb, disconnected or unable to engage.
Learning to recognise these signs can help you understand what is happening in your mind and body and identify strategies that can help you feel more regulated. This can provide a useful foundation for the other work you do in CBT.
What happens between CBT sessions?
CBT isn't just something that happens during your therapy appointment.
You will be encouraged to practise the skills you have discussed between sessions. This could involve completing a thought record, trying a behavioural experiment, approaching something you've been avoiding or practising a different response to anxiety.
The purpose isn't to give you lots of homework. It's to help you apply what you're learning to everyday life and gradually build confidence in using these skills independently.
How long does CBT take?
There isn't a set number of CBT sessions that everyone needs. The length of therapy depends on the difficulties you're experiencing, your goals and how you progress.
The aim is not simply to complete a certain number of sessions, but to help you understand your difficulties, make meaningful changes and develop skills that you can continue using after therapy ends.
Could CBT help me?
CBT can be useful if you feel caught in patterns of thinking or behaviour that are affecting your wellbeing.
Starting therapy can feel daunting, and you don't need to know exactly what you need help with before you begin. An initial conversation can be a useful opportunity to talk through what you're experiencing and consider whether CBT could be a suitable approach.
If you're looking for CBT in Edinburgh or online, I have availability for adults experiencing difficulties including anxiety, low mood, OCD, specific phobias, emetophobia, social anxiety and low self-esteem.
If you'd like to find out more about CBT, you are welcome to get in touch to arrange a free, no-obligation telephone consultation.
