Ilchi Lee believes that life energy can come from a number of different places, including selflessness and love. This energy resides in all living things, but it can be difficult to sense for those not attuned to it.
One film that really demonstrates this concept is Willy Wonka and the Chocolate Factory. Based off of a book by Roald Dahl, this 1971 film features Gene Wilder as the eccentric chocolatier. As a number of children win a trip to get a sneak peek inside Wonka's secret factory, the film mostly follows the trials and tribulations of Charlie Bucket and his affable Grandpa, who comes from a poor background.
The factory demonstrates the true power of imagination, with memorable features like a chocolate river and the Oompa Loompa workers. It soon becomes apparent that the contest was designed by Wonka to choose his successor. One by one, the other children succumb to some form of temptation, until just Bucket and his Grandfather are left.
The character of Charlie is an example of the good things that can come from leading a selfless life. It eventually becomes Charlie's life purpose to take over the factory from Wonka.
If you've got the chance, try to seek out the original film. While the modern Tim Burton/Johnny Depp collaboration has it's charm, society was likely better off not knowing where the Oompa Loompas came from.