21 day habbit

it takes 21 days to make a habbit. I want the habbit of only eating when I'm hungry. And I want it to be only healthy foods, no carbs. but doesn't that sound impossible?

I have a problem where if I think of a food I can't get it out of my head until I get to eat it. and the food can be decided by anything- a commercial, passing by a certain window, a book. it doesn't really matter, that food becomes the finish line and I will do anything to get there. a few days ago that food was these chips I saw in the grocery store. I went in to buy trail mix, but I saw these chips and literally couldn't leave the store without them. rationally, I was telling myself to put them back and go do something to distract myself. but I couldn't help it.

this feeling happens with other things as well, like taking a nap or getting to a certain place or having a certain item of clothing. it's like a tunnel vision. that's the only thing I want and I need to have it. and if I don't get whatever I wanted I get really sad, like I wasted the whole day or week because I didn't have this one thing or experience.

I want to get rid of this tendency. I would like to just eat when I'm hungry, eat healthy food, and not be obsessive over it. this way I can get back to doing other things. I won't have to battle in the kitchen, I can just kick ass in the gym, lose a ton of weight, and be really fucking happy.