How can I stop my clumsiness from destroying my relationship?

Hello Fluther:

I’ve been seeing someone for a few months on and off who likes to keep a lot of precious things around his apartment. I’m talking specifically about expensive electronics.

This is fine except for the fact that I am an uber klutz despite how hard I try to keep it under control! The other night I accidentally bumped his monitor with something and knocked out two pixels. I was mortified and had to apologize profusely to him.

This has been kind of a bone of contention between us and I’ve been trying to be better about it. This is the first dating relationship it’s affected but it’s also damaged me in the past via embarrassment and injuries. Does anyone have some experience with this? How have some of you effectively “trained” yourself out of clumsiness?