I revolutionising my life......., but I need help......................... Options

[doom_diver]

Lol it is kinda embarassing to post here, considering how I believe many problems arent truly problems at all. But doesnt matter, here it goes:

After my school year, I looked back and I saw nothing. Im pretty much a fat, lazy b****** with no friends. Im mediocre in school and I am a couch potato/computer geek. I knew sth gotta change.

I think these are my problems:

1) Computer - This darned invention always seems to lure me in and I lose the sense. Homework? Later. Revision? Can wait. I somehow need to stop my addiction so I can a normal life again.

2) No friends - Well, I am not shy, but the thing is I dont feel I am in any group of friends. I mean we have laughs and work together, but I dont truly feel Im their 'friend'. I dont even think they consider me friend. Many times have I seen them laugh and talk and I want to join them, but I just dont feel a part of them.

3) Unfit - I get stitches by walking 100m and I am sick of myself being a fat lump of meat.
Well, I already do more exercise. I try to run more (1 km) and I now can do 15 push-ups and 30 sit-ups (I know I suck but Im trying to improve) I also eat pretty unhealthily but I dont know any healthy food and stuff.

Summary:

Need help on: Stop computer addiction
Get more friends
choosing exercise to do and I just cant seem to go past what I can do (never can get past 15 push-ups)
Healthy diet

I know Im asking alot and no one is obliged to help. But if you do, I show my eternal gratitude.

THANK YOU!