The idiom "a lot of self-control" means having a great deal of restraint, discipline and willpower in managing one's emotions or desires. Full definition
It took a lot of self control not to just spoon it all into my mouth (deliciouslyella.com)
I always love a good pasta salad and tend to volunteer to make them whenever invited to a potluck, but I have to admit I avoid making them for our meals at home because honestly, I don't have a lot of self control when it comes to eating pasta. (aggieskitchen.com)
Jacquey is fabulous, has lots of self control, and would probably never eat a cookie with her breakfast just because it was there. (coffeeandquinoa.com)