Understanding Depression
A plain-language explainer on what depression is, why it happens, and how the cycle of withdrawal keeps it going, with a note on getting help and staying safe.
Written by Tarun Vermani, Trainee Clinical Psychologist Last reviewed
Assign and Download open signup, then return you to this worksheet. No card required. Resource access depends on your plan or trial. Already have an account? Sign in
Worksheet preview
Understanding Depression
PreviewLive preview — type in any field to try it. Nothing is saved here.
What depression is
Depression is more than feeling sad or having a bad week. It is a persistent low mood, a loss of interest or pleasure in things, or both, that lasts for weeks and gets in the way of daily life. It can affect how you sleep, eat, think and relate to others. Depression is very common, it is not a sign of weakness, and it is treatable. Many people who feel this way go on to feel much better with the right support.
Common experiences
Depression shows up differently for everyone, but there are some common experiences. Tick any that you have noticed in yourself lately. There are no right or wrong answers, and this is just a way to build a picture together.
Why it happens
There is rarely a single cause. Depression usually grows from a mix of things: difficult life events such as loss or ongoing stress, our biology and family history, a habit of harsh, self-critical thinking, and the way we naturally pull back and do less when we feel low. These pieces feed into each other. Understanding this can take some of the blame out of it, because depression is something that happens to you, not a flaw in who you are.
The cycle that keeps it going
Low mood makes everything feel harder, so it is natural to do less, step back from people, and drop the things you used to enjoy. This brings relief in the short term. But doing less also removes the very things that used to lift you, so you get fewer good moments and less sense of achievement. With less to feel good about, mood drops further, which makes doing anything feel even harder. Round and round it goes. The good news is that this also points to a way out.
What helps
Depression responds well to treatment. Talking therapies such as CBT can help, and one of the most effective approaches is behavioural activation: gently doing a little more, even before you feel like it, so the better feeling can follow. With low mood, motivation usually comes after you start, not before. Your GP can also talk through whether medication might help, on its own or alongside therapy. There is no single right path, and it is fine to ask for support.
Getting help and staying safe
If depression is affecting your daily life, please speak to your GP, who can talk through the options with you. If at any point you have thoughts of ending your life, or feel you might not be safe, please reach out straight away. In an emergency call 999. You can call Samaritans free on 116 123 at any time, day or night, or text SHOUT to 85258. You deserve support, and reaching out is a sign of strength, not weakness.
Over to you
Try it here — nothing you type is saved. Sign up to assign it and let clients complete it on any device.
When to use ‘Understanding Depression’
‘Understanding Depression’ is an interactive cognitive behavioural therapy (CBT) worksheet, most often used in CBT for depression and low mood.
It is designed to be used within therapy rather than as a standalone self-help tool: a therapist introduces it, works through it collaboratively, and helps make sense of what it surfaces. You can preview the full worksheet above, then assign it digitally for clients to complete between sessions on any device — or download it as a print-ready PDF.
How it works
Most people work through it in around 8 minutes. It moves through six short steps:
- What depression is — Depression is more than feeling sad or having a bad week. It is a persistent low mood, a loss of interest or pleasure in things, or both,…
- Common experiences — Depression shows up differently for everyone, but there are some common experiences. Tick any that you have noticed in yourself lately.…
- Why it happens — There is rarely a single cause. Depression usually grows from a mix of things: difficult life events such as loss or ongoing stress, our…
- The cycle that keeps it going — Low mood makes everything feel harder, so it is natural to do less, step back from people, and drop the things you used to enjoy. This…
- What helps — Depression responds well to treatment. Talking therapies such as CBT can help, and one of the most effective approaches is behavioural…
- Getting help and staying safe — If depression is affecting your daily life, please speak to your GP, who can talk through the options with you. If at any point you have…
Completed on the Formulate platform, your client's answers are saved automatically and shared straight back to you, so you can review them before the next session rather than waiting for a paper copy to come back.
The CBT approach behind it
In common with other CBT methods, ‘Understanding Depression’ works by re-engaging with meaningful and rewarding activity (behavioural activation). The aim is not positive thinking but a clearer, shared understanding of what keeps a difficulty going — and practical, testable ways to change it.
Because it is a CBT tool it stays focused on the here-and-now links between thoughts, feelings, the body and behaviour, and it works best as one part of a wider course of therapy rather than as advice or a diagnosis.
Evidence & sources
This worksheet is grounded in established cognitive behavioural therapy theory and practice. Key sources include:
- Beck, A.T. (1967). Depression: Clinical, Experimental, and Theoretical Aspects. New York: Harper & Row.
- Lewinsohn, P.M. (1974). A behavioral approach to depression. In R.J. Friedman & M.M. Katz (Eds.), The Psychology of Depression: Contemporary Theory and Research. New York: Wiley.
- Martell, C.R., Dimidjian, S., & Herman-Dunn, R. (2010). Behavioral Activation for Depression. New York: Guilford Press.
For use alongside professional support
Formulate provides educational CBT resources for use with a qualified therapist. They are not a substitute for professional assessment, diagnosis, or crisis care.
If you need urgent help now:
- Emergency services: 999 — if you or someone else is in immediate danger
- Samaritans: 116 123 — free, day or night, 365 days a year
- SANEline: 0800 689 5555 — 4:30pm–10:30pm, every day
More Depression worksheets
View all Depression worksheets →Depression
Depression Formulation (Beck)
A longitudinal CBT formulation based on Beck's cognitive model of depression — mapping early experiences through core beliefs to current maintenance cycles.
Depression
Activity Monitoring Diary
Track activities hour by hour alongside mood to identify patterns linking what you do to how you feel.
Depression
Behavioural Activation Schedule
Plan and rate activities with mastery and pleasure scores to gradually rebuild a rewarding routine.
Depression
Downward Arrow Worksheet
Trace a negative automatic thought down through underlying assumptions to the core belief using the "what would that mean?" technique.
Depression
Core Belief Worksheet
Identify a core belief, rate its conviction, gather evidence for and against, and develop a more balanced alternative.
Depression
Rumination Functional Analysis
Track rumination episodes and analyse their triggers, content, function, and consequences — to understand why you ruminate and what alternatives might work.
Want to assign this to a client?
Create a free therapist account to use the assignment and library download tools. Clients can complete assigned homework online or use a blank PDF. See how the homework workflow works.
No card required. The Free plan includes 10 worksheet uses a month. Check plan access and limits.