Say what you are going to do, then do what you say you're going to do. Make commitments carefully, including implicit commitments, and keep them at all costs.
Make keeping commitments the symbol of your honor. Don't break confidences. Don't attempt to "PR" your way out of a commitment you've broken.
Don't let 1-on-1s slip into the ineffective and monotonous territory of simple status reports and progress checks. Get 100+ questions to improve your 1-on-1s and use them to engage your people, uncover issues, and unleash potential.