Getting a coach is the best thing that you can do. I’ve done four years with two different coaches, and it is just fantastic. There’s what you say and there’s what people hear, and the gap between those two is sometimes enormous. What really matters is what people hear, not what you say.
Being a manager also isn’t about trying to become perfect. You’re not going to stop making errors. But it’s about having a mature appreciation for the fact that you’re a flawed human being. Probably everyone around you is a flawed human being. What are your flaws and how are you going to manage around them? What are your strengths? How are you going to optimize those?
I also learned a good trick, which is to ask somebody, “How are you doing?” They’ll usually say, “Good.” And I’ll say, “No, no, really. How are you doing?” And they’ll answer, “Good.” But then I’ll say, “Tell me what would you say if you weren’t doing good? How would you express that to me?” And then they tell you things. It’s partly little tactics, but the more important part is making it clear that you want to hear what they have to say.