Depends on why I'm sad. Anticipating the arrival of spring helps.
Getting outside, going downtown, visiting my favorite music stores(--where I have friends I can talk to).
Going to a concert helps.
Playing a gig always helps my mood, my energy level.

Having a partner to share my sadness with, is a big one.

Ultimately, the most effective one is looking at why I'm sad, and making a start to do something to resolve the cause.

Rich McCarthy