Why directions?

I have been concerned with different directions lately.

Directions to where we are going the next couple of weeks. Vacation (of sorts).

Directions to my life. At nearly 45 years of age, I am now expected to live until 92! I feel as though I have allowed events of my life to direct it, so have been floating through, going through the motions. I want to find a way to take direction of it. Why look forward to retirement in 20 years when I have almost 50 left - how boring - and what then would I do when retired? I'd rather find something that I really enjoy doing as opposed to doing something that pays the bills so that I can continue to have fun at it as long as I am able. But what? Study more science or turn to art? How do I decided what I'll still be passionate about 30 years from now.

Directions to give my nearly grown children, well, young adults. How to continue to guide them without nagging or interfering. Where do you draw the line between helping them and letting them make mistakes they need to ?