help me am lost

hi my name is stuart i was told 5 months ago i had diabetes and it was a big thing for me to take in. in my past av been a bad lad smoking 80 cigs a day and drinking 15 to 20 pints on a fri and sat night tut tut but i gave up smoking over 3 years ago and not had 1 since and on the very rare occasion that i go out for a drink i only have maybe 4 pints and i have had enough my problem is i have had all the tests etc heart/liver as i have high blood presure also and thank god there was no lasting damage to my organs. i cannot lose any weight at all i have totaly changed the way i eat in every way possible im walking more eating salards everything but nothing is comming off so i am getting to the point of chucking the towel in and thinking whats the point. i did put 3.5 stone on when i gave up smoking has anybody got any helpfull tips for me thanks stu.

hi again thanks for your replys yes i have had my thy test clear and yes i am very lucky not to have any problems. and now i dont go to the pub at all haha very rare only a few pints and av had it i want to go home its very funny how people can change when they have had the shits put up them with threre health. as i said i smoked 80 cigs when i was working as a wagon driver then i jacked the job gave up smoking and may i had i gave up without any help at all no gum no tabs no nothing set the day and that was it boom (still got no money )lol .and since i have gone onto the met having a drink makes me feel sick has anybody had this problem? . anyway thanks again for your replys
regards stu