DEPRESSION is almost always ANGER turned inward. It is about not getting what you want but instead of externalizing the hurt you hold it in thus experiencing disappointment and disillusionment. This may involve self-pity. If you do not get out of this frame of mind you will most likely experience despair.
Sometimes DEPRESSION is confused with GRIEF because of the heaviness of both of these emotions. GRIEF follows a loss – sadness and sorrow in relation to what/who has been lost. DEPRESSION usually involves self-hatred. Hate is related to ANGER and this is what you are directing at yourself (GUILT might also be related to your self-loathing). At times DEPRESSION is characterized by suicidal thoughts/attempts, ‘emotional numbness’ and/or an inability to function – if this is the case for you, seek professional assistance.
You heal DEPRESSION by having FAITH. That is, you must trust yourself to take the appropriate action in order to get what you want, by being willing to wait – patience – for it to happen and to believe that all things are possible – hope. FAITH is about trusting God/Universal Energy or your Soul to assist you to fulfill your goals/dreams. Even when these things do not come to pass there are reasons which you may understand at some point in the future or you may not. This is also an aspect of FAITH. As a human being you cannot control everything. However, the way life turns out is often far more beneficial for everyone concerned than anything you could have imagined or created.
Excerpt from DIY Therapy Chart: an Emotional Healing Guide.