You are getting a lot of advice on which books to read and strategies on how to read them, but one thing that I feel is often very overlooked, despite how important it is, is to search a proper ambient for a reading session.

Get yourself a comfy seat and a nice light. Turn off your phone's notifications (except for calls and other important matters) and put your phone away, same with your computer. You can have soft background music (no lyrics, of course) if that is your cup of tea, just make it so you cannot see the screen. Get a cup of coffee or tea if you like that, and put an alarm on your clock: until the alarm sounds, there are no obligations or anything else for you to do other than reading at your own pace.