Hi. I have some problems in my life and I have been diagnosed with depression 3 years now .. I never took any pills (I know that's stupid if I need them) but I tried my best to be a happy person always with a smile and optimistic.. but lately I've found my self in a very dark place and my thoughts aren't helping.. before I take the decision to go to a doctor and get described.. I would like to know if there are any herbs or OTC tablets that I can take to increase my serotonin! Thanks a lot!

Edit: I wasn't expecting this to blow up at the proportion it did .. and thanks a lot to everyone who took time to answer me or other people's questions.. and thanks a lot for the kind words that you guys have given me! It means a lot me! I have taken some things like going out more getting my vitamin D .. I got a multivitamin as well(I don't know if it's good) also I started meditating and trying to have a more positive look at life(it's not easy when your whole life have felt like a victim but in reality you were the victim and the offender of your own life) so what I am getting to is that I am trying to get better.. and it's because a few hundred people showed me that it's worth it.. thank you all. I will also seek for help and will try to get some herbs in my life as supplements and not as main medication.