Starting again

I'm not new, but I am recently starting again after falling off the wagon. I started MFP in Sept of 2011 weighing 160 pounds. I lost weight very slowly and tried everything, including the gym 6 days a week and eating anywhere from 1000 (I know, too low) to 1900 calories. Nothing worked. I tried In Place Of A Road Map and educated myself on TDEE, BMR, everything I could possibly learn about the body and weight loss. I only lost 10 pounds in the course of a year and a half and it was thanks to strength training...but I even hit a plateau with that and stopped losing from that, including measurements. I decided to do a metabolism reset and eat what I thought was my TDEE at lightly active (around 2300) for a few months. I actually ended up eating around probably 2500 a day, not exercising (got lazy and unmotivated from lack of results) and usually skipping logging a couple times a week. I gained about 20 pounds since January. The weight seemed to come on really fast and I don't know why I let myself gain so much without doing something about it. I was having fun with my life, going out a lot, and stopped caring for awhile. Since I hit 170 I've been upset about what I've done to myself. My clothes are tight and I have fat where I'd never seen fat before. I know I'm not that big but it's a lot different from what I'm used to! I have been going to the gym again for awhile now and watching what I eat but my weight is coming off either very slowly or not at all, so I just wanted to get back on the forums to get some more motivation and say hi to the people I haven't talked to in awhile!