Turning 40 this year with my first kid expected on my birthday. I've progressively become "happier" with each decade (maybe half decade, actually). That's not solely because of this supposed wisdom that comes with age, but much more because I put a lot of time and effort into myself. The flip side of aging is that a lot of my friends never outgrew "bad habits" from younger years and now they are stuck with them. A lot of drinking, quite a bit of pill use, and a lack of purpose outside of work/hanging out/consuming entertainment. I also see older folks fall into the trappings of tying their "happiness" to things that can be purchased, which of course isn't actually happiness.
