Don't panic. Maybe it's 40.

How does that matter as well...

The answer could be 40, because one size doesn't fit all. Every body has a different path to follow, so different questions and different "ultimate" answers. 

Point is, as Douglas Adams says, "DON'T PANIC" - yes, in bold, darling. 

You are doing well. You are on the right path.

Keep questioning. Answers are just round the corner.