Hey pal hate to hear this and what your going through.I have a weight issue myself,mainly due to overeating and not eating as healthy as I should.I have started walking every day and cutting back and sweets and starches but is very hard indeed;food has always brought 'comfort' to me as it were if I was feeling down.There are so many ways to lose weight and I truly hope you can find one that works for u.
As far as the other things goes,I have been in a similar position also.I felt drained and just meh day in and day out.How I helped myself get out of that funk was simply to be around people as much as I could;not sure if that can be a thing for you but it helped and still helps me a lot.
You are not alone by any means pal and please PM me,anyone else on here,or call a professional if need be.
Really hope things turn out ok for ya