Anger is a natural emotion which occurs whenever there is something in your way. We probably get at least a little angry about 20 times each day. Ignoring our anger can make us believe that nobody counts and nothing matters.
Professionals debate whether major depression is biological, psychological, or both.
But everyone agrees that all depression, mild to severe, shows the need for better self-care. To the extent that this is true, it is a sad reflection of our guilt-ridden culture. It is not a reflection of some biological predisposition toward being depressed. Any depression is a problem, and regularly occurring depression is a serious problem. If you are seldom depressed, read this section for general ideas on self-improvement.