Stop spending money when I don't need to

recently its so hard for me to stop spending money here & there, I just moved out so now its kinda like, I make my money, I can spend it on whatever I want, no one can tell me no anymore…no one but my boyfriend lol it makes him iritated & even worse we live together so he knows when I spend money. the eating out is what kills you thought, im always on the run because I work a lot so its very hard for me to get something to eat at home when the drive through sounds so much better & faster hahahaah