Without necessarily disclosing anything that can be exploited, what is your own absolute worst habit when playing poker that you know is giving you trouble?
For me, it's the habit of being too eager for button-clicking (to call/fold/raise). I mean, I already thought the situation through during that space of 5 seconds, right? just click already. Nope, turns out, rushed decision. And the reason is that my hand is always on the mouse. Now I had to take my hand away from the mouse so that I give myself a few extra seconds to mull things over a bit more. Like DNegs once moaned to himself, "just take it slow, man..."
How about you?