It feels like old times.

I just ran into an old friend at a wedding this past weekend. After the night was over, I found myself thinking how nice it was to see him again. So, being the good little soldier of the technological revolution that I am, I left him a message on his Facebook to let him know. The essence of my message was that seeing an old friend reminded me of old times.
Tonight, I was reading his reply to my message, and I had a thought. At some point in the not too distant future, I will likely find myself thinking about right now as "good old times." My thought continued to progress and I was struck with the question or regrets. Hindsight being what it is, whenever I reflect on old memories there is always something I miss or wish I had done differently. My question became; what might I look back on in a few years and wish I had done different right now, and how how could I prevent this from becoming a reality?
The more I thought about this question, the more I realized that I cannot. A great mentor once told me that "The person you are today is a direct result of every experience you have had and how you chose to react to it." As long as I consider my actions and do what I believe is the right thing at the time, I will live happily with the outcome.