Teams

If you form a group or team to work in, get into something where every team member is better than you or if those are not available, with those that are lesser able than you. In the first case, you learn and get a lot of exposure.
In the latter, you get to lead the pack and impart something good in the process.

But if you choose those who are equally good, it is more difficult to remain professional as ego clashes are meant to happen. And all of them would be so married to their ideas that they would not divorce it for the sake of the team.