All I can say to you, if you look after your health, eat the right stuff, do enough exercise, keep your mind active, you might be around when you're 100 having this conversation with someone.
I had a trial run with Norman Ross for 21 years, from '61 to '82. I didn't have it in mind to open a chain like Harvey Norman. I opened one shop, but then the next thing you know, I've got another shop and then another shop.