Can you have a sucessfull site without using social media?

[Mod81]

I have been building my sites for about 4 months now trying to post new unique content every few days and i looking for places to post some backlinks. I have not really done any sort of social media marketing as I confess I dont really know where to start as I don't even use social media sites for my personal life. I did create a pinterest page the other day and spent hours pinning and uploading unique content but not got a single follower after all that work. So I am considering dropping the social media marketing but wondered if in todays world whether I can still get good enough ranking without using social media?