This is the lowest ive ever felt about myself?

I'm 22 and I don't take showers as much as I use to I go almost a week with out doing that or brushing my teeth.( I know its gross) I'm waiting for this job agencie to help me find a job so I'm just at home all day long laying in bed till four or five only to get up and move to the couch for five hours then return to my room and repeat. I hang out with the few freinds I have at night though and drink and that's not helping me at all. I've gained fifty lbs and it just makes me hate myself more. I keep telling myself to excercise or at least study for my ged and get up but I never do. I started seeing a physcologist and were suppose to have our second session on the first of next month. I will admit I am lazy I always have been but there was a time where I would get up and excercise and also do other things. I don't think I'm an unattractive person and if I did I would feel even worse its mostly just the weight issue. I've been told by family and freinds to excercise because theycan see I've gotten worse but I never do and if I do I only do it for one day and don't continue. I have no hope and no confidence and I'm not positive about this at all. I'm not trying to look for sympathy here I'm just stating how I feel and my situation and if you've ever been like this and overcame it how did you do it? Sry for grammer and punctuation