Authors:

Men are afraid to rock the boat in which they hope to drift safely through life's currents, when, actually, the boat is stuck on a sandbar. They would be better off to rock the boat and try to shake it loose.

Thomas Stephen Szasz (2004). “Words to the Wise: A Medical-Philosophical Dictionary”, p.140, Transaction Publishers
Men are afraid to rock the boat in which they hope to drift safely through life's currents, when, actually, the boat is stuck on a sandbar. They would be better off to rock the boat and try to shake it loose.