okuma - I feel for you and can relate (not personally, but with a family member) so I know Exactly what you go through, have gone through, and hopefully will go through.
First let me start off by saying I hope in your first response you meant a "Psychiatrist (doctor who prescribes medicine)" and not a "physicists" or a physician (regular doctor, not a specialist). Having a "phycologist" is good and can help, but in my experience and my knowledge as a Scientist I can tell you that it will not fix your problems. If it has been 7 years and you still have no "peace" during those down times than you are not on the right med's. I know how hard it is switching med's constantly, but I can tell you that in the end when you find the right combo to combat your disorders it will be well worth it. Suicide is never the answer, ever. There is a right combination of med's out there to help with all of your disorders. Also, all the disorders you listed (BiPolar, OCD, and anxiety are very tough to get the meds right do to there functions and chemical make-up. IMO opinion, and only because my family member has those exact three conditions, finding the perfect set of med's is very, very tough....but you can find med's that will help much more than what you are taking now if you can't get peace during the down time while hunting...those constant thoughts can be controlled some what)
Something I have found works for my family member is music...granite it is not something most do while hunting...but while you are in the stand you can play some of your favorite songs quietly while you wait to see a deer. Reading, playing games, etc. I don't think would help as it causes you to "think" and thus will and can lead to those "constant bad thoughts"....so music, IMO would be your best bet.
If you ever need someone to talk to I would be more than happy...shoot me a PM.
Take Care
Josh