Taking "tastes" of food as I'm cooking it. There's no reason to taste it five times, but I do.
I think my worst habit is the compulsion to eat something "naughty" when I am alone or when people leave the room. I used to be a "secret eater" (i.e., when I'd make bad food choices, I'd go eat it in my car, or in a closet, or when I was home alone) because I didn't want to be judged. It became such a habit that when I find myself alone my first impulse is to grab the least healthy thing in the room, even when I am not hungry!!
I try to substitute this by grabbing and chugging some water, but something I still find myself in front of an open fridge without even being consciously aware of having gone to do it!!
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Terri
Female, 28 years old, 5'4 1/2" tall
Starting weight 1/4/11 = 215.2 lbs.

Weight 9/3/12 = 164.9 (net: -50.3 lbs.)
Current mini-goal: 160 lbs.
Next mini-goal: 150.2 lbs.
<--- Official "Healthy BMI" weight 
Estimated final goal: 130 lbs.
"You don't have to change your life today. You only need to change your day today."