How do you stay positive?

<a href="">IUI</a> #2 failed this month. I had 4 follicles release and an "amazing" sample from my husband. I really thought everything went perfectly. I just can't believe that millions of sperm couldn't manage to find the 4 eggs that the Clomid provided. 
As you can tell by my tone, I'm not in a good mental place. It's my 14th month TTC and the 3rd under treatment with a doc. I'm even more moody at the moment than when I'm on Clomid/progesterone and I'm just really having a hard time. 
What do you do to help yourself through it? I don't think crying all of the time is the answer. I'm just so terribly pessimistic at this point.