Is it possible to learn to be happy even when not everything in your life is OK?

Work is driving me nuts right now. Every other thing in my life is fine, and I wish I could learn to appreciate that most things are good and not have my mood ruined by the one thing that isn’t, but unfortunately that doesn’t seem to be my natural set point.

I’m not looking for advice on changing my situation. I’m looking for advice on making the best of it. It doesn’t seem reasonable to expect everything to be good all the time, it seems more practical to learn how to live with something being bad.

Do you have experience with this? Do share.