Increase the house term to three years and cut the senate term to five. Maximum two terms of each. That's a total of sixteen years for the successful ones. Remove all pensions and benefits not available to ordinary citizens who do equivalent work; let them pay for what they want like the rest of us do. Make them subject to all laws to which other citizens are subject (e.g. Obamacare).
And for the final blow to the self-seeking, require that all political contributions be ANONYMOUS. They can't sell influence if they don't know who is buying. Americans should be permitted to donate to any candidate or party, in any amount they choose; that's FREEDOM. But being able to purchase an outcome with a donation is BRIBERY, a CRIME.
Those steps will result in people who are willing to forego ruling and SERVE predominating in congress.
I agree, maybe give them a 401k for the years they served but that’s it!