It's my significant other's 40th birthday soon and I've organised a comedy night out, with beers and a curry. That's pretty good for the night itself but it made me think about my last significant birthday. It was pretty dire and gave me cause for reflection. I was in the middle of changes then because I wanted to be in a radically different mental place by the time I got to my next big birthday. But why do we seem to wait for such milestones to reflect and make changes? Do