Mineme--try 300 mg of L-Tyrosine for when you feel down and out. I use it to combat adult ADHD but it does have anti-depressant qualities as well. You can get it at Wal-Mart, as well as vitamin stores. You might also try Phosphatadyl Serine (which works for me as well), but it is quite expensive.
I was taking Zoloft several years ago for OCD but quit because it made me feel like a zombie (no emotional highs or lows) and it caused insomnia. At the time I was also taking Adderal (timed release Dexedrine) for the ADHD, which worked quite well, but a change in jobs meant no more health plan, so I had to find a non-MD prescriptive solution. L-Tyrosine, oral Vitamin B-12 (in 2500 migrogram doses), Phosphatadyl Serine, Pregnenelone, and DMAE, more or less in that order, helped the most.