People are referred to therapy on nhs for depression and anxiety and low self esteem issues which focus on challenging negative unhelpful thought patterns and behaviours to enable people to have more freedom, confidence and control over their lives. so they are not passive recipients to all stresses or exaggerate worsen things for themselves. Its to help people respond better to things they perceive negative to reduce likelihood of depressive anxious episode. I've heard a lot that depression is a result of stressful things we've not dealt with well and suppressed emotions/feelings, like internalised anger.