Weightloss... struggling...

I’m not taking this as well as I thought I would 😭😭 I’m 200lbs and I’m trying to lose wieght before our trip in June but I freaking love my junk food and been trying to diet for 3 days and now my boyfriend went shopping and brought home so much junk food and it’s making me so upset all I want to do is munch out!! I hate the way I look I can’t find anything that fits me i wear clothes that are bagging so I’m not showing my belly! I’m feeling super depressed about this right now 😔😔 Help please what is your thing to help with trying to lose weight??