What I learnt from the best managers i have worked under -
1) Don't be a condescending ass
2) Give autonomy to your reportees
3) Listen carefully, give your attention to your team
4) Lead not direct
5) Go beyond office in terms of relationship
6) Give them a clear career path
7) Praise in front, give feedback in private, softly
The rest of my WIP list is here
https://www.theprohack.com/p/what-not-to-do-when-you-become-...