My tip? Make your to-do list your twitter. I.e., when you get that ping of dopamine depletion that makes you want to pop open a social network or similar, open your to-do list instead. Start out by just scrolling through it, then maybe go do whatever you were going to do. Ideally you'll have some small, easily completable tasks on the list along with the larger more annoying ones. If so, maybe sometime you’ll spot one you can get done really fast. Make sure you check off the item when you’re done. Do it enough & the goal is to rewire your reward drive towards productivity, eventually building up a chemical response to checking off items that’s greater than dipping into the infostream.