It is better to get it closer. If you want to know yourself better, serve others. If you want to know who serves better, look for those who talk less about themselves and much about the products and services.
Most of today’s professions are relying on services that they provide to the world. The better the service, the more is the reward. The bigger the audience, the more is the hold.
No one ever held the higher position in the world unless he/she had served the world at the same level. Your growth is only dependent on how and how much you served.