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

"Get out of the house and have an honest-to-God adventure right now," writes Quora user Mary Leek. "Make it as big as you can possibly manage, take lots of pictures, throw caution to the wind, take on the risk, grab the brass ring. If possible, include someone you're close to — make a BIG memory. It has to be more than jumping out of an airplane — it needs to be measured in days, not hours or minutes. You'll still be smiling about it when you're old and creaky, I promise. I am."