17 things to start doing in your 20s so you don't live in regret in your 40s

Tech Hub/Flickr

Youth doesn't have to be wasted on the young.

They say youth is wasted on the young.

It doesn't have to be. If you take a look at Quora and Reddit, hundreds of people older and wiser than you have shared their best tips for living life to the fullest before you hit middle age. All you have to do is heed their advice.

We checked out some of those Quora and Reddit threads and highlighted some of our favorite insights about maximizing your youth. Read on to see what life changes you can make, starting today.