> * figuring out what motivate your juniors and trying to align that with what needs done

This is true, but be careful about taking this too far.

Young people arrive at the workforce with a wide range of expectations and motivations. Some of those are going to be unrealistic. You should always try to work with them to understand what drives them and help them find their fit.

The most frequent misaligned expectation I've seen in juniors is the desire to lead greenfield projects in year 1 of their career. It can be very disappointing to arrive at your dream job and learn that you have to work on someone else's code, and that you have to build a reputation before they'll hand you the fun greenfield work.