Self-Improvement vs. Self-Obsessed

For any high performer, working on improving ourselves or learning something is a near-constant activity. At what point do those activities become something to fill our ego, versus truly allowing us to have an integrated life? Optimization for optimizations sake?  We need to figure out ways to make these activities woven into our everyday lives and habits. We also need to know our objectives as to why we want to improve something. There are real things that are asked of us by our families and teammates, where we want to be our best to those we care about. To prepare for those moments, we need to know which activities make us resilient, healthy, and great at life.