R&T,
Here are two great sites that may help you deal with negative and/or depressive feelings. It is easy to navigate, and I have found it very helpful myself in identifying detrimental thinking patterns.
Free on-line CBT programs:
http://www.moodgym.anu.edu.au/welcome
http://ecouch.anu.edu.au/welcome
If you find that you need more help to feel your best, then seeking one on one therapy/counseling is a great option as well...and again...one I found much benefit in! :)
All the best... and keep posting with us. We care and are here to support!
S.C.