...discussion at Vanguard Diehards forum, started by a newbie investor after today's big stock market jump. Does it sound familiar?

I am 27 years old and just recently decided to buy into the market in a lump sum in a taxable account ... on May 10, 2006, I jumped right in with about 35K. I couldn't have picked a worse time to buy in. Two months later I'm down $2,600 with no recovery in sight, and little confidence of any near term turnaround. So last Friday, I moved everything to a money market account, and missed today's bounce. Now I'm convinced that I will always make the wrong investment decisions, and can't get the thought of knowing that I threw that money away out of my mind. What do ...