I am currently reading this, it is very wordy, as you would expect, but excellent and written as if Stephen Fry is actually reading you the book. You can hear him saying each sentence, A good, interesting read...

Injury - what a pain

I recently played 5 a side football in a Dads tournament, and survived a whole 8 minutes till getting an injury. I hyper extended my knee, after it jarred into the ground under a tackle. The initial pain is bad enough, but in my line of work, and being self employed, alsorts of bad thoughts crossed my mind. A week later, 2 trips to Hospital and x-rays, there doesn't seem to be anything broken or snapped - phew. But ligament and tendon over stretching. Time seems to helping the healing process and hopefully in a couple of weeks I will be able to start running again and building up my fitness. I have not trained myself now for over a week and it is so frustrating. I have sympathy with anyone wanting to play, participate in a sport and not be able to due to injury.
So keep the faith, train hard when you can, and be positive.