Gimpy... again

So a couple posts ago I talked about how soccer was therapy for my depression... unfortunately it is also causing a need for physical therapy. :( Playing soccer with the Belding kids last night, I took one step towards the ball and felt a distinctive popping tear in my knee, right where I had my surgery. Yup, feels like the meniscus again. I'm starting to think that soccer isn't a good thing for me anymore, that maybe I have to give it up for my knee's sake. Except I don't know that I can do that, I don't have will power strong enough to keep me off the field. How can I quit something I love so much simply because of my knee? The thought of not playing again tears me to pieces, soccer is one of the best things in my life, I love it more than any sane person should. Why is it I have to be the one to give it up? It makes me mad. Walking around the house with crutches frustrates me, I don't know whether to sit down and cry or punch a wall... I often feel like doing both (though I think I hide it fairly well). Beth came home with me last night to fix me a sandwich, get me ice and my leg up, do some of my dishes, and let the dog out and feed him. I don't know how I got so lucky that I can just call someone to bring me crutches and they do so much more. Of course, she also told me I need to stop running around so much, stop being so busy with sports, and actually give my knee the chance to heal. The problem with that is that it's so boring! I can't sit still, I can't stop playing sports and being active! People count on me to be there and I love doing it. How can I let others down and how can I stop doing what I love? I know I sound like a whiner, but I'm frustrated and annoyed, so I think it's acceptable for a little while.