Vishen Lakhiani argues you should document your life lessons in a book. Even if ten people benefit, you've created a legacy. He says if thousands each took on one responsibility, many global problems could be solved in the next 25 years.
Chapters
Each one of you sitting here, irrespective of your age, even if one of you sitting here is 77, I want you to write a book on all the lessons you learned in Life through your 77 years. And even if 10 lives out there in the world can benefit out of your book and their life becomes better, you have created a legacy. So I want everybody to feel a sense of responsibility towards something we don't have to solve everything in the world. If thousand of us can take thousand responsibilities and in the next 25 years, thousand problems in the world can be solved. I'm borrowing the word you used sometime back. We leave behind a paradise on earth.