Deleting all of my social media?

[Sydney]

I'm 15 and I decided to delete/deactivate it all. Facebook, Twitter, instagram, tumblr, everything. I was so unproductive since I started using Twitter especially. I got my first B after I started using Twitter! Which sounds weird, but I'm generally a straight A student. I deactivated everything yesterday and I keep getting these urges to tweet everything I'm doing like I use to. I changed the passwords to a random combo of number and letters, so I couldn't try to reactivate even if tried to. I just have so much free time now I don't really know what to do? How do I stop automatically grabbing my iPhone after something happens so I can tweet it? I know it sounds really pathetic.