I believe that once in a while, we all experiences that day of disappointment. May be your expected capital was not good as you expected, or the first person who you employed quit his job or you could negotiate as much as you wanted with material suppliers. We all faced tragic disappointments and Googled "How to Get Over Disappointment" and read all the junk written by junkies.
Time For Yourself
Feeling the power of letting go
Visit a similar start up company and talk to the founder