Take a year off. I did it 2010, and it really helped me curb any negative feelings that I had building. I have been going since 2004 and the festival is something I look forward to every year. It's not fun missing Coachella, but sometimes it helps.
*I also missed 2007 because I was out of the country for work. I was fucking depressed because the line-up was stacked with bands I wanted to see. Rage, Sonic Youth, Bjork, LCD, Jarvis, JMC...it was not an easy miss.