Anyone Ideas???

Ok im 21,Im a 16 uk size.When i was at school i was a size 10 and toned.But since alot has happend in my life and i resorted to comfort eating.Now i really wana loose the weight.But ive no interest in myself,no motivation at all.Its not that im lazy i cant explain it i just dont care about myself i suppose.Ive started doing things to change and get back to the confident person i once was.But its not working.I never dress up coz im thinkin wats the point,it wont improve anything,i always have my hair back in a pony tail and rareIy ware makeup,shopping depresses me and wen it comes to men im afraid to get close coz i no if it gets serious,it'll lead to sex and i cant even look at my body,dont want anyone seeing it. sound so sad but i just dont no wat to do to kick start gettin the old me back.My weight is really getting me down,i have big boobs which makes me look even bigger,Anyone any ideas on how i can turn this all around??