Make reading an integral part of your day. During the times that you would ordinarily be watching TV or playing a video game, read a book instead. It can take some time to get into this habit, but after a few weeks it will be an ingrained habit each day. Even just a chapter a day is a good start and will quickly get you hooked in a book.
Keep a diverse supply of books on hand. You may be more inclined to read if you have a wide selection of books from which to choose. These can be bought at a local or online bookstore if you have the budget for them. If not, books are also readily available in thrift stores and yard sales. And don't forget the library!
Get books that cater to your interests. If you love history, buying a selection of books about crafting will probably not entice you to read more often. It is okay to buy a few books about things you want to learn about, but you also need books about things that already interest you. There are a lot of times when you won't be in the mood for learning and simply want some entertainment.
Take a book with you. There are countless times when being able to read for a few minutes will make time pass more quickly. You can read while waiting in line or waiting to see a doctor or any other time when you find yourself with time to spare and little to do. Keep a book in the car with you for times you have to sit in line at the bank or wait for your child in line at the end of a school day.