Having not flown an airplane for just over a year now, I agree- I now know what a crack addict goes through while in withdrawl.
It gets easier and easier as time goes by, and pretty soon, you'll be back to your normal self.
Whether you made the right decision is only for you to decide, however, I'll tell you this much... there are many more MILLIONS of people out there who are leading very fulfilling and rewarding lives, either spiritually, financially or emotionally, who've NEVER sat in a cockpit.
You're in good company.
Just remember why you got out in the first place- that's usually enough to counter all the "gosh, it was so much FUN!" feeling that'll go through your mind...