Hi Eddie
I think all of us with a creative spirit have felt what you feel at one time or another.
The causes may be different but the feeling is the same.
The fact that we are offering what advice we can is proof that the feeling can be beaten and the sun will shine again.
I'm sure the answer for you is here somewhere.

It's been proven that just the physical act of smiling regardless of how we feel will generate endorphins which after about a minute will make us feel better.
I've done it and it actually works!
Something to try.

If you can't find a solution that works for you in this forum it always helps to focus on someone who had it worse than you...Rodney Dangerfield

http://www.brainyquote.com/quotes/authors/r/rodney_dangerfield.html

Always works for me.
Best wishes,
Carkins