Manager vs. Leader:
Manager has subordinates. Subordinates are his/her possession. Manager has external attributes of power – in addition to the subordinates he/she has fancy car, secretary, big room. It is possible to distinguish a manager by his/her external characteristics – what he/she possesses.
It is possible to recognise a leader by who she/he is. People recognise a leader and want to follow him/her. A Leader is a servant of his/her followers helping them to grow and succeed. (Robert Greenleaf).
If we want to change something we must start from ourselves.