Leaders grow fastest by taking on uncomfortable, novel challenges and then converting those experiences into capability through reflection, feedback, and psychological safety. That combination is what improves transfer to new tasks (not just repeating what you’ve already done). Try closing every first-time project with a short debrief: what we tried, what surprised us, what we learned, and one “next experiment” you’ll run this week. Psychological safety lets teams actually surface mistakes, request help, and challenge the plan—without that, stretch becomes stress.