Lost decade of retirement

This post by Jim Hamilton on the lost decade for stocks made me check on my mutual fund returns:

Fund _______________5 years_____________10 years/inception
TRP Retirement ................ -2.92% ............................... -1.83%
TRP Equity Index...............0.79%................................. -0.40%
TRP Growth........................2.45%................................. 2.03%
TRP International...............6.19%.................................. 1.54%
TRP Science & Tech ...........4.62%..................................-5.8%

Assuming inflation rate of about 3% on average I may have been better off putting the money under my mattress. The lost decade is testing my faith in buy and hold.