Hi newstart,
When you can be honest with yourself, you can began to move forward and heal. If you don't want your ex back, why be obsession over how well he is doing? Turn that obsession you have over him into love for yourself. Don't try and get even, get better in loving you and others will get on board and do the same. Take out that year book and see what's been going on with people who's paths you have crossed. You have more going for you than you think...don't waste it on thinking about how happy your ex is with his life, create a new one for you without him.
Good Luck,
Faded Rose