Some days...

...the best thing you can do for yourself is to count your blessings.  It is so much better for us to think about all the things that we have to be thankful for, rather than having a self-defeating attitude worried about what all could go wrong.
I challenge you to go start a thankful list, and see how much it improves your mood. 
I just added to my 365 list, that I started but never finished back in May of 2011...wrote 125 more things that I am so thankful for. 
And my attitude is completely different then it was when I started.
Your turn!