I knew that chasing after lost money by increasing wagers is a bad idea, but I went on major tilt yesterday against a table full of really tough opponents -- folks I knew were good -- and as my hands got worse and worse, I played more and more, going in with crap like 6-7 offsuit, hoping I'd get 3-4-5 on the flop.
I lost like an entire weeks worth of winnings in about an hour on the $5/$10 tables, then tossed the rest of it away on the roulette wheel, and then beat myself up over it overnight.
Time to re-focus and force myself to play super, super tight. Phil Helmuth defines super-tight as only getting into hands with AQ, AK, and pairs of 77 or higher. It seems to be working, as I've doubled my bankroll with this strategy.