Some Tips To Lose Weight?

Ok i was prty fit earlier but now i hv becum overweight frm the last 1 yr or so. I go for running at tyms but m just not able 2 continue with it after a week or so. Neither i hv the stamina now nor the activeness to go fr it e'day. I am becomin lazier day by day and wen i thnk abt it i kp gettin more and more tensed as i am just 19 at the moment and m already having protruding tummy :( I love to play cricket but there is no1 near my place to play nor an academy nearby. I am vry upset plzzzzzz sum1 help me. Tell me what my diet should be and wat all exercises should i do??