Social media is definitely a double edge sword, just like alcohol or a nice piece of steak. The impact is probably more obvious in the changes to society that effect the individual rather than the individual’s specific use of social media:
Increased global competition, chasing the latest memes, aloof friends, busy parents, bad news spreading more than good news, etc depresses everybody.
I was stuck on the couch the last few days recovering from a nasty bug and i spent eight hours or so for two days on my phone surfing Facebook, Instagram and Medium in between sleeping sessions. Medium was good intense reading but I was getting tired with so much thinking. The remaining time I was on Facebook and Instagram. About 10% of it was keeping in touch with real friends, the other 90% reminded me of just how much of a cesspool social media is. I found myself thinking that there is future or direction in our world. I had to snap myself out of it and get back to my creative and business projects once I regained my strength.