If you have stress, insomnia, depression

If you have something hurts, we know which pill to take and to which doctor to apply. But if you care about things of a different nature? If our unchanging companions become depression, irritability and spleen? If again and again overcomes insomnia and can not avoid stressful situations? Which doctor should I go to then? .. And here we are left alone with our problem and do not even suspect that i...