“In the world of business, the people who are most successful are those who are doing what they love.” – Warren Buffett
Mr. Buffet is exactly right. And I’ll add that this applies to life in general. Do what you love, the way you want to do it, for people you love. And when you stop loving it, you should stop doing it.
If you keep investing yourself into it – the work, the idea, the people – then as long as you love it and can lift it, you can do with satisfaction for a long, long time.