A person committed to becoming the best version of himself/herself
turns into a natural leader just by the power of example.
If your actions create a legacy that inspires others to dream big, constantly learn, do better and become more, then you are an excellent leader.

What is the difference between
a manager and a leader?
A manager is just a position in a company, a diploma, a job in the nomenclature of jobs. A manager cannot simply become a Leader, anyway and anywhere
Whereas a Leader will become a manager, eventually. If he isn’t already in that position.