"Leadership" is a spiritual gift, a gift given by God via His Holy Spirit. It is not simply an office or a position or a career choice. Not all have it, not all function well in the responsibility of the gift/calling/service of leadership.

If it is encouraging, let him encourage; if it is contributing to the needs of others, let him give generously; if it is leadership, let him govern diligently; if it is showing mercy, let him do it cheerfully.

- Romans 12:8