This is why it's a good idea to enjoy life a little bit now instead of sacrificing every joy to be able to do it all later. Climb that mountain now while your knees are still capable. Play that video game now while it's fascinating to you. Learn that language now while you're cognitive faculties can still serve you. Brew that beer you always wanted to, write that short story you've been putting off, teach yourself to paint or bake or play golf now instead of putting it off another year. Strike while the iron is hot or you'll wish you'd done more with your short time here. You won't be on your death bed wishing you'd worked more or watched more TV. You'll wish you'd traveled more or finished that project left undone or spent more time with loved ones, actively living life.