I am a 47 year-old recent cancer survivor. Here is what I wish I did in my 30s:
1. Invest in the stock market. If you are in it for the long term, it is the easiest market to learn.
2. Stop going to the club. I was never great at pulling women there, but it is almost effortless for me at art shows, lectures, and museum events. Besides, I enjoy those events more.
3. Stopped trying to look young. I wish I had developed a more mature style.
4. Stayed in great shape. I have moved between good shape and ok shape. I wish I would have had a better diet and workout routine throughout my thirties.
5. I should have started dating women in their 40s and a few 50 year olds during my thirties. I knew that I didn't want kids or to get married. I spent too much te dating women with baby fever. Besides, now that I am in my forties, I realize that there are a lot of fine older women.
6. I should have balanced my effort between solidifying new friendships and dating when I moved to a new city. I spent too much time chasing the skirt, as my old football coach used to say.