Alright I'll give it a go as well, although be warned I've only lost about 3.5/4st so my before and after pics won't be as dramatic as some of the others on here.
I've always been a chubby kid, and as I passed through secondary school the weight just began to pile on. After college had nearly finished I was just over 18st and depressed about it. I was embarrassed to even walk in public and would send my little brother to the shops to get me sweets and chocolates and fish and chips etc as I was too ashamed. I was bullied throughout secondary school by the younger kids about my weight and appearance and this made me turn to bingeing on junk food to make me feel better, so I got fatter, felt more depressed and thus ate more-it was a vicious cycle and pretty typical of how a lot of people become overweight.
At college things did get a little better as there was no bullying any more and the students seemed much more mature. But there were still some snide remarks by students and even teachers on my weight and some embarrassing moments as well. When I did my work experience at a hospital the nurse was showing us how to take blood and we were all sat watching (about 20 of us) then she told me to stand up and used me as an example of an overweight person that had difficult to see veins. Absolutely humiliating.
Another incident which stands out is in y12 volunteering for our "studentcrew" to help the prospective students on open day. We had to be given t-shirts with the college logo and coloured red so the students could recognise us to ask for help. The biggest size was xl and I was xxl, I couldn't fit into it, so just followed my friend around for the rest of the evening just to tag-a-long. Nobody asked me for help. Doesn't sound like much bit it made me really upset.
About 4 months ago it finally hit me that I might be going to medical school this September and having been obese at school and college I wanted a fresh start at university. So I started to count calories and go on short runs in the morning. Slowly but surely people began to notice I had lost weight and this motivated me even more. I finally plucked up the courage to go to the gym and start working out and I have never looked back since. I have become somewhat addicted to the gym now and feel depressed on my recovery days. It also helps to relieve my stress as well instead of turning to junk food like I used to.
Unfortunately my before pics aren't too accurate because they are of me in y11 at 16st. In college I gained another 2st (up to 18st) but didn't allow anyone to take any pics of me due to the sheer humiliation of my appearance. Today for this success story I took the first pic of myself in ages!
Sorry the before pics are terrible quality they are pictures of pictures if you get what I mean..
A big thanks to the mods and other users on tsr fitness forum who gave me advice, help and encouragement and also complied those useful stickies!