I've had the privilege to be in multiple leadership roles, and they've each taught me something different. One of the most invaluable concepts I learned is that, universally, for a team to come together and work well, there needs to be a level of respect, camaraderie, and unspoken trust. This can only occur if they know the real morals and values of the team they are committing themselves too.
People may attempt to put up fronts of an idealistic version of themselves, or try to rule with an iron fist. At some point, those sort of dynamics will crumble. However, when one can be humbly themself and respect their peers values as much as they expect their own values to be respected, bonds can be formed from there that are inseparable.
From my sporting experiences, I've learned that the best leaders aren't always the best players, they are the ones who work the hardest. They never expect anything from their team that they themselves wouldn't think is worth doing. I believe that one's actions have to match their expectations.
The foot can't always be slammed on the gas. It is important to take the time to get to know one's peers, and take breaks when they present themselves. There are no gold stars for working yourself to exhaustion. If you aren't able to balance between making jokes with your peers and expecting them to hunker down when times get tough; one will unknowingly create a stifling environment that people will dread coming into.
I lament double standards and hypocrisy. I am as prone to mistakes as any other human being, and if I offer critiques I should be able to handle them coming back my way. A good leader is able to acknowledge their own faults, and not take criticisims or new ideas as a personal attack against them. In the same way that they should not cultivate favoritism that creates clique-ish atmospheres that are hard to assimilate into.