How to manage intake

Ive been trying to loose weight for years but cant ever seem to make an impact, i exercise regularly and avoid fast food but i cant get myself to lower the amount, i dont know how people manage with the hunger. The only time i made any progress was after become homeless and just not having access to food most days, but now im back with family and i have a full pantry and i cant figure out of to control myself. I try to fill up with celery, spinach, carrots, water and all that jazz to stave off cravings but i just get hungry again 10 minutes later until eat something more substantial. Tried gum for a while, to keep myself chewing on something hoping that would help but i cant keep myself from stuffing my face. I dont want to loose what little progress ive made, if anyone has some advice id appreciate it.

How to manage intake