Have 90 lbs to lose, and hopefully some accountability buddies to gain

I'll be honest, this isn't my first time using myfitnesspal. My longest streak was 50 days and I lost something like 20 lbs. But now i'm back up closer to where I started: 215lbs. The few friends I had on mfp were very negative and made me feel bad (I keep an open diary in the off chance someone would give me constructive criticism). I thought I could do it all alone but I guess I can't.