How too make something go viral

Learning about social marketing, found that making you content go viral is as good as It gets because It gets you & your content Infront of a substantially large amount of people(world).
For low costs which is better than any CPC service.

I read articles and stories about making content go viral and one main thing they taught me that most things that go viral have no real substance, no moral behind it e.g. Nyan cat

So I ask you guys, How do can yu make content with a real meaning go viral