I concur with 'healthy nutrition' but have a story of my own that was unbelievable until I tried it myself.  I had suffered a situational depression from the dying of my parents, one killed and 10 months later my father died at the hand of a employee.  I could not live with myself but being disabled (only one lung, among other things) I went into a deep depression and even checked myself into a hospital for depression.  The doctors and their RX's only made it worse. To make a long story short. I purchased a pendant from BIOPROTECHNOLOGY that I heard from Dr. Weil and Dr. Mercola was to fend-off EMF's (electric magnetic fields from cell phones, cell phone towers, computers and the electric companies transformers-one located outside my yard).  Thinking it just a preventative from further cell damage, I did not expect much of anything obvious.  Then about 2-3 weeks, I stopped being depressed and went off all the serious anti-depressents which by then included lithium, went back to my dcotor to let him know I'd kicked the depression and he laughed as I told him and showed him the BioPro Pendant.  How stupid these little doctors can be.  I'm the one feeling my oats today! It made me see even more clear just how the pharmacuetical companies dictate to these doctors!  I suggest every one listen to Dr.'s like Mercola and do the research on their specific dis-eases - once these docs start feeling the blow from finacial loss - hopefully they will catch on.