It's been true in my life that when I've needed a mentor, the right person shows up.
One of the topics I'm most passionate about is servant leadership - the greatest leaders recognize that they're here to serve, not to be served.
Too many leaders act as if the sheep... their people... are there for the benefit of the shepherd, not that the shepherd has responsibility for the sheep.
For a manager to be perceived as a positive manager, they need a four to one positive to negative contact ratio.
Age is rarely a limitation to being a mentor.
If people aren't clear on what business you're in, what you're trying to accomplish, your values, your goals, then shame on you. It doesn't mean you shouldn't involve them. It's just your responsibility to make sure that that's clear.