Service is the one thing

"Service is the one thing that we all learn here," added Silver Birch, "and you can serve in so many different capacities. You can serve by giving light, serve by bringing colour into people's lives, serve cheering them when they are downcast, serve by helping to find truth--you can serve in so many ways."

Kazuo Kondo trans. and ed. Silver Birch: Kyo no Kotoba. p. 147.

It is said that there are roughly 4 purposes for souls to be born on Earth with : 1) to fulfil our wishes that we could not in any of the previous lives; 2) to correct relationships with others which went wrong; 3) to awaken our abilities that are latent, to straighten kinks in our nature, and to achieve whatever good we have planned to; and 4) to shed light on people around us with our talents or abilities that we have acquired through previous incarnations.  Any souls were born with these four purposes in one lifetime. The above quotation mainly refers to purpose 4.