Hi Aaron,

Its good your going to quit coffee, but you need to taper off slowly to avoid the caffiene withdrawl. I use to drink coffee and than I cut out only a 1/2 a cup every couple of days until I wasen't drinking any more. This way you wont get the headaches and you won't feel as tierd from cutting down on the caffiene.
Maybe you should try the herb St. Johns Wort for depression. It worked well for my depression. The only thing is you can't take it with prescription anti depressants. Also you can't take it with certain medications and certain natural herbs. "Prescription for nutritional healing" is a great book by James and Phylss Balch. This tells you what you can and can't take accordinally to each type of individual.

Good luck!