How do I repair my door lock?

Patti, usually it's easier to adjust the strike plate on the jamb instead of the lock. There are two screws on the stike plate and they can be loosened and moved up or down for a micro adjustment, or remove it and drill the hole bigger for a larger adjustment. Also, check the hinges first, you may just have loose hinges.

I agree with Laura, adjust the strike plate and knock out any wood that shows in the hole where the bolt goes.

thank you

Patti:

I called a locksmith on this one. It was done quickly --- therefore, inexpensive (and done right)