Turn a new leaf

Today everything came to a halt because I've lost everything. My boyfriend dumped me because of my weight. I've lost all my friends because they don't want to be around a heavyset girl, I'm tired of being depressed. I have nothing else to lose. So to start to gain back my life I want my weight to be the first thing that I change. I want to have support on MyFitnessPal so friends are more than welcome. I need motivation so someone please help!