I second the cutting down on social media. Another thing I've noticed with my own reading is that too much to choose from makes it harder to start, let alone finish. Try also going outside your usual genres once in a while. Pick up something new and wonderful and try to ignore the other books for a while.
But really, these days the most important thing is definitely just taking enough time to read, because there's constantly so much else going on that distracts us. If you can, take the book to a place where there's no TV, no Internet, no phone, and then read for as long as you can.