Why do I feel depressed?

Depression and low mood can affect every part of life. You may feel emotionally flat, exhausted, disconnected, hopeless, or overwhelmed by even small everyday tasks. Some people experience sadness and tearfulness, while others feel numb, irritable, or unlike themselves. It can also affect sleep, motivation, concentration, relationships, confidence, and the ability to enjoy things that once felt meaningful.

Sometimes low mood develops gradually without a clear reason. At other times, it can be linked to stress, loss, trauma, relationship difficulties, burnout, life changes, or long periods of coping alone. Depression is not a sign of weakness or failure. Often, it is a sign that the nervous system has been under strain for a long time.

Therapy offers a space to slow down and begin understanding what may sit underneath the feelings you are experiencing. Rather than simply trying to “fix” symptoms, therapy can help you understand yourself more deeply, recognise patterns that may no longer serve you, and develop greater awareness of your emotional and physical responses.

It can also be helpful to understand how the nervous system responds to stress and overwhelm.

When we feel under threat or emotional pressure, the nervous system can move into a state of hyperarousal. This may show up as anxiety, racing thoughts, overthinking, panic, irritability, restlessness, difficulty sleeping, or feeling constantly on edge. The body remains in a state of alert, as though it is preparing for danger.

Others may experience hypoarousal, which is more commonly linked with depression and shutdown. This can feel like numbness, emptiness, exhaustion, disconnection, hopelessness, lack of motivation, brain fog, or withdrawing from others. In this state, the nervous system may feel depleted or overwhelmed to the point of shutting down.

Many people move between both states without realising it, for example feeling anxious and overwhelmed one moment, then emotionally flat and disconnected the next.

Therapy can help you become more aware of these patterns and support you in finding your “window of tolerance",  a term used to describe the emotional zone where you are able to feel, think, and cope without becoming overwhelmed or shutting down. When we are within this window, we are more able to reflect, regulate emotions, connect with others, and respond rather than react.

Part of therapy may involve learning how to recognise when your nervous system is moving outside of this window and developing ways to support yourself more gently and effectively. This might include building emotional awareness, understanding triggers, exploring past experiences, developing self-compassion, or learning grounding and regulation strategies.

Depression and low mood can feel isolating, but you do not have to navigate it alone. Therapy can offer a supportive and non-judgemental space to better understand yourself, reconnect with your needs, and begin moving towards change at a pace that feels manageable for you.