A lot of us try to impress others. I guess it is human nature. But it is not leadership.
Nothing is more interesting than a person who is genuinely interested in you. So decide that you will be interested in the people working for you – and they will find you interesting.
If you decide to do this, you can train yourself to listen better, delegate more and assume good intent.
So: if you want to impress others, have the courage to let them impress you. That is impressive!