Starting to get down in the dumps again

I have falling off the wagon and lost my motivation in the past few months. I've been using mfp for almost 2 years now and I have lost 32 pounds in total. I used to be very strict with my eating and exercing routine but this summer I started working full time which threw my routine off completely and in turn I became too lazy and tired to maintain it. I told myself come September I will go back to normal and start over again but it hasn't been that easy. Lately i've been snacking a lot and over eating without really realizing it. I do still eat healthy however after dinner I treat myself to a snack which turns into two snacks and so on and before I know it I am over my limit. I always try to justify and tell myself that I won't gain a lot of weight over one night and that I need a mess up day and tomorrow will change but tomorrow just turns into what happened the day before and so on and before I know it the week is over and I wrecked my pattern every day. I'm now up 7 pounds which was a bit of a reality check this morning. I've also gone from exercing 5 times a week to 3. I always told myself that I'd never be those people that would gain back the weight but here I am gaining it back slowly which also sucks because now my 15 pound goal is being set back to 25. I know what I need to do but I'm just to brain dead to do it at this point. I would really love some words of motivation right now. I'm starting to feel down and I feel like I should just forget about it.