Our 20s fly by before we know it, and we want to make sure we did the decade justice. Did we worry about the right things? Are we where we should be now? The best way to prepare for those questions and answer them to the best of our abilities, is to make sure spend time on what really matters and what may help us in the future. We took a look at a Quora thread that had great advice for people in their 20s who may be wondering what some of the important things to invest time in may be, and here is what we found.