20 Things to Do When You're 30 That Will Make Life Better at 50

"Save money. I know this is a boring, trite, and unsexy suggestion, but it's true," writes Quora user Cliff Gilley. "In your 30s, the average person has a lot of disposable income, some of which can almost always easily be set aside for use later in life. Plus, building the habit of saving early means you'll continue it further down the line."