Apparently endorphins like music, and singing doesn't make you sweaty. Believe what others tell you about the good, the true and the beautiful. The pitfall for the depressed person is that, knowing they are ill, they somehow still believe their view of the world is accurate. Read the scriptures. You will feel the psalmist's lament as you never did before and you will be one with those who cried out to Jesus for healing.
Bad things grow in the dark.
Talking about them brings them into the light and shows them for what they are. This rule is the most important of them all. Perhaps it seems odd that May is the month chosen for remembering mental illness. Better it should be November or February, where, at least in my part of the world, the weather is so dreary. But spring is hard for those who cannot perceive beauty, for those who feel dead inside when life is bursting all around, for those who live in the shadow of the cross while others are breaking out of the tomb.