Why do you want to be the boss?
If you’re doing it for more money, or recognition, or because there’s nobody else better available, then you’re probably doing it for the wrong reason. If being promoted is the only way to get recognized then it’s probably the wrong reason. If it’s the only way to get ahead where you work, or because you’re the most senior person there, or you’re took the job so that you wouldn’t have to work for *that* guy, then you’re probably doing it for the wrong reason.
Those reasons won’t get you through the tough times, won’t propel you out of bed in the morning, won’t let you smile instead of scream when frustrations and challenges mount. Those reason won’t let you be a good boss.
If the mission of your organization aligns with your values, beliefs and ideals, and your place in it allows you to come to work every day and do your best, then that’s a good start.