I need to get into shape and square myself away, what should I do?

i am ft tall and over 250 lbs, i feel it is time to do something with my life. i am about to start college which i believe will help me out alot but i want to do something else with that. i think it is time for me to start working out and make something of my self. i am an awkward person;kind of clumsy,not very fast,out of shape,really lazy and weak. i was thinking of a weight training program combined with something like boxing or martial arts. but i am not sure what to do, i know that there are so many martial arts styles to choose from. i live in a small town and there are only three martial arts studios around here;karate style,kung fu style and tae kwon do style,which one should i do? i want to totally master myself and really learn something about life.i have also thought about adding some religion or spirituality to my life,what should i do, there are so many religions out there and none of them agree with each other, but i think that it will help me out alot or maybe some meditation training to help me out, i have alot of anxiety and stress, i am also bipolar with ADHD and depression/anti social. if anyone has any helpful advice on what i should do to improve my situation please feel free to post your responses. i am 27 and i still live with my parents. i see a psychiatrist like every six seeks and i have a counselor and a case manager that visit my house weekly. i draw 900 dollars a month in disability but i am about to try to start working again. i am not sure what kind of job that i should get though. i dont do that well around new people.i can make so much without it interfering with my disability check so i think that i need to start work again. i think that i have suffered long enough and that it is time that i did something with my life. i am sorry that this turned out so long, i didnt plan on making it that way on purpose it just kind of happened. thank you, please help if you can. :)