Over several decades, you need ways to keep yourself going when you are not being recognized and rewarded for your performance -- and to deal with criticism, resistance, setbacks and people disliking you or what you are asking them to do.
If you envision another 10, 20 or even 30 years of leadership work, then you must find effective methods for maintaining your physical vitality, your emotional flexibility and your intellectual reach and freshness.
Many who rise to positions of leadership become more closed and set in the ways that have brought them success so far. So periodically, senior executives must create timeouts to review where they are investing their time and energy, to ensure that they remain capable of generating new behaviors to deal with new challenges.
Leadership might be learnable. But instead of taking comfort in the idea that you can develop, wake up to the sobering realization of how difficult it will be to manage novel situations continuously and under often-extreme circumstances.