Buying books would be a good thing if you could also buy the time to read them.
Practice: Hold a book that appeals to you in both hands and say, “I wish I had time to read,” and set it back down. If what you’d like to do is sketch more, pick up your pencils and put them back down: this is an all-purpose suggestion.
Advanced practice: List as much as you can remember of “where the day went.” Then cross out anything that didn’t bring you satisfaction. Repeat until one day you find yourself reading.