I'm still on chapter 4. However the overwhelming recommendation so far has been to eliminate (or tone down) presence on social media to avoid distractions. Which I have somewhat done (I'm not active on facebook, instagram and whatsapp now. Am toning down my reddit usage to a few essential subs. Slack & twitter are the only places where I maintain active involvement).

I use rescuetime to block out any distracting sites when I am working and that seems to help me a lot