Something a lot of people miss or don't understand: software engineers typically emulate other software engineers, not managers.

If you are tech lead you should be keeping this in mind at all times - your behavior, attitude, and approach to things gets amplified across team members.

If you are a manager you should also be keeping this in mind at all times - the values and behaviors want demonstrated on your team will need to be cultivated by key devs in your group. Working with them to help shape their understanding of how to be effective and how to lead others will really help things solidify in the group.