Popsugar Living Advice People Share the Things They Wish They'd Known at 21 People Share What They Wish They'd Known When They Were 21, and It's Such Good Advice January 23, 2020 by Erin Cullum View On One Page Photo 3 of 21 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 College Might Be the Only Time You'll Live Near So Many of Your Best Friends I would have gone over more, stayed later, had more sleepovers, etc. Previous Next Start Slideshow AdviceCollegeWellnessSelf Improvement