The Economist has a great article on how for many people, the age of 46 is a big turning point in terms of well being:
As this graph and the accompanying article illustrate (Age and happiness: The U-bend of life | The Economist) people, regardless of where they live, have a greater sense of well being once they get through the middle of being middle aged. Not only that, but it continues to increase as they get older. There are many theories for that, but the data is strong.
I think everyone should read this article, not just the middle aged, for it can also help younger people and give them a sense of perspective. Obviously you can find individuals that this doesn’t apply to, but as I get older, it feels right to me. Well worth a read.
Smart People I Know 
Good article, read it .. thanks for sharing.
I should be getting happier now, but I am not, cause I am losing/lost my hair 😦 … so I think hair loss should be one of the factors of happiness! Tee hee.
I think for anyone, there will be bumps along the way, whether due to hair loss or vision loss (me). But yes, it is a good article. Lots of good stuff on the economist. I really like their tumblr.com site as well.