[hn_throwaway_99]

I say this in complete seriousness, but group therapy was probably the most important helpful training in my transition from developer to manager.

Group therapy is especially helpful because it makes you realize that, as "crazy" as some other people may seem, everyone looks at the world through their own emotional filter based on their background of personal experiences. Thus, if your job is motivating and growing the skills of people on your team, being able to truly empathize with them, and to understand what drives their motivation, is hugely valuable.