Tips? 1) Be rich 2) Be healthy 3) Be intelligent Pick 2...if you have only one you're SOL. It applies to everything a person can do. You could be the richest person. Wont matter if you die of who knows what quickly. If youre very healthy, it wont matter because youre dumb and broke. If youre a genius it wont matter because youre not healthy and you have no resources...
You would have to be very sick not to be able to write a book. I would say healthy > intelligent > rich for personal happiness, but intelligent > healthy > rich for good writing.