I have a tub faucet that has begun to leak out of the metal piece you push in to activate the shower. I don't believe it is leaking anywhere else. Does anyone know how to fix this?

There are repair kits you can buy for some brands, but unless you have exp. At doing this you may find it hard to put back . It may be best if a plumber was called. The kits can be purchased from: Lowe's, Home Deport or your local plumbing supply.