Hi again. Since posting my earlier response, I have given this some more thought.
While painful to admit, I wish I had lived my life with less anxiety and worry. It interfered with my happiness to varying degrees and of course didn't make any difference.
To say it a little differently, if I had known things would work out as they did eg health and wealth, I could have relaxed and enjoyed the journey more. I am not saying I was miserable and didn't enjoy things, it's just that fear and worry diminished the level of joy I could have experienced.
My biggest take-a-way from life so far is balance. Work a little, play a little, save a little, spend a little. Doing any of these things to excess can be a problem.
Also, something that has been written about a lot (eg "The Station by Robert Hastings http://www.thestationessay.com/
"), there is no final destination (aside from death), only the journey. So you had better enjoy it. If not, I think you increase the likelihood you will die with regrets. Reminds me of the Peggy Lee song, "is that all there is", http://www.youtube.com/watch?v=LCRZZC-DH7M
Good luck to all.