In my teens, I thought people in their forties were almost done with life – they had the house, the car and the kids; they had ticked off society’s checklist and were basically just waiting it out until it was time to kick the bucket. I turned 41 last month, and it’s safe to say I have strayed off the conventional path. I don't own a house, I have no children and I haven't done half the things I want to. And, hopefully, I'm nowhere near the end of my days.