Hello Karen, I came across this blog of yours today and it is really an insightful read. Personally, I don't have any regrets. I'll be turning 30 come December, and I have done almost everything I could imagine in the last 5 years of my 20s. Although, I do feel stuck at times but in last one year or so I have had the opportunity to actually try and experiment more with my life!
One advice that proved handy for me in my early 20s was to take life One day at a Time, and it has stuck with me ever since!
Now that I look back, I realize that this advice really helped me live a regret-free life till now!