I'm 13 and I weigh 145 lbs. all my friends only weigh 100-115 I feel so over weight compared to them I really want to loose 20-30 pounds I try dieting but it's so hard to stick to! I need help I'm only 5'3 so I'm very chubby I recently gained 15 pounds after I was in a car accident so I just need help to get all of my extra weight off