Substantively, you will learn things and be alerted to dangers you will not see on your own. Tolerance means being aware that people loyal to you and the organization may have very different ideas than your own. Punishing people for disagreement creates a silent, moody and sycophantic group. The criterion for a healthy organization is not that there be no dissent, but that the dissenters trust you, and the group enough, to go along with most decisions with which they do not agree. If people hold themselves out, there is no organization.
Optimism speaks for itself.
The combination of experience with decisiveness means there is always something left to try. When people believe in themselves and in you, the possibilities of redemption are almost endless, even in a serious crisis.