Don't deny natural urges the more you try and beat it the more you will obsess about it

Think of all the things that could go wrong...Penile Fracture, etc...

if u think u have a problem with it then go and get a girl to do it for u. also when u get older these urges will settle down (atleast thats what im told, got the same problem)

There is quite a bit of controversy over this subject. There is really no medical reason to stop the practice though you may have a religious concern over it. You sort of answered your own question with the woodchopping thing.. Try to find an activity that is incompatible with the practice... I would actually prefer to see you release your sexual tension in this way (before you find a long term relationship) than to go out and "get a girl"... Of course you want to prevent it becoming an obsession and overdone.

but the faith in the Lord will help u with the problem. Pray constantly and seek help

Ok me and so many other people are having this problem. Here is probley the best thing to do if you turley want to stop. First make a goal for your self such as only do it once a week, then do it once every two weeks. If you feel an urge of doing it. Try geting yourself active and just dont think about it. Go out side ride a bike or play ball. It should help.