Interesting idea, but some studies have shown that social media can lead to depression as well: http://www.mb.com.ph/articles/311899/can-too-much-social-net...

Basically people present and exaggerate the best of themselves online (highlight their achievements, show how much fun they're having with life). People compare themselves to what their friends seem like online, and get depressed because they're friends seem to be doing so much better than they are.