Keep trying -- you're doing step 1 with tracking and it will bring a new awareness.
I find myself wanting something (chips, etc) but can remove myself from the temptation by having some substitute around (Trisket crackers, vegetable strips, baked pita chips...). It's also nice to use whole grain items, like bread or crackers, because they make me full faster and stick with me longer. Try to start the day with high protein, too because they stick with you longer.