Vote for someone else.
Vote against incumbents, they're the enemy. Forget about Democrats and Republicans, party labels miss the point.
90-some freaking percent of our districts are safe seats. Nobody in the real world has job security anymore, the market is a cruel place. That's not a value judgement, that's just the way it is. I have to constantly upgrade my skills, my thinking, my abilities, and so does everyone else.
Congress works for us. Treat them like the underperforming staff they are and fire them. Bring in someone else. If they can't do the job, fire them too. Loose change, vote for someone else.