Sometimes when you get runs like this, halfway thru your run you will subconsciously change your way of play, whether it is letting hands see a card that can take all your chips cheaper, or raising too much with draws, just to name some examples. Your style of play might have changed without you really noticing it. Going 20 without a cash is a pretty long time, but it can happen. I'd be studying my latest tourney and critisizing the hands that I lost chips in to see if I could have done something to stop it.

With runs like that, it's hard to not think negatively about your play, and that will make your play bad sometimes.

Study your play, and good luck getting over the hump. Also, read the anthology post at the top, might be a post or 2 in there that can help out...