The ability to make the needs of others more important than yours, for long stretches of time. This is an important ingredient in succeeding at things. It is not spoken of enough. The successful business owner is focused on her customers’ needs, ahead of her own. The successful employee concentrates on his boss’ needs, ahead of his own. A good performer puts the audience first, practically and philosophically. A good person, in general, is always trying to help others.
Putting someone else first is an act of empathy and humility. If you add the ability to work hard to that equation, you can succeed in anything. And spiritually, you have already succeeded. Because you won one round in the lifelong fight against your ego.