Do the best you can with yourself and hope for the best.

The line distills a pragmatic, self-reliant ethic: focus on what lies within your control—your effort, choices, and character—while accepting that outcomes remain partly contingent on luck, circumstance, and other people. It balances agency with humility, discouraging both perfectionism (you can only do “the best you can”) and fatalism (you still must act). Read in light of Lynn’s public persona as a working-class survivor and plainspoken storyteller, it also sounds like hard-won counsel: self-improvement is worthwhile, but peace comes from releasing the demand to control results.