20s are the best times of our lifes. Not sure what the 20s will say, but those after 20s will surely agree. Ask anyone around you if they wish to go back to their 20s and we bet most of the answers will be a firm Yes! It is always when we get older, we start to look back to realize that we could have done things differently for a better today. Here’s a list of things that most of us (will) regret not doing in our 20s.