Reading for personal interest or pleasure - every moment I can squeeze it in.
Serious work-related reading - on action list, usually has a deadline in that it will be discussed, reviewed, walked through in a scheduled meeting. If you show up without an annotated copy, you are recognized as a deadbeat.
Casual work-related reading - magazines, journals - keep them in a reading "in-box". Anything a couple of issues old that hasn't been read goes in the trash. It's obsolete and anything still relevant will still be under discussion in current issues. I scan through them in late afternoon fried brain time.
Don't overlook listening to books, etc. on tape, CD or MP3 when you can't read with your eyes. I listen to books on CD when driving with no passengers.
Newspaper, online news, etc., after dinner at home.
I usually have at least two personal books going (one on CD in the car and one hardcopy at home) and sometimes more. (Most ever was 5) And I have no problem deciding at any point during a book that I've chosen to read to quit. I've stopped within 50 pages of the end realizing that I really didn't care how it ended.
If you're reading something non-fiction for yourself, don't feel like you have to read every word the author writes. In some types of books the first several chapters are explations of why you should read the book. If you've already decided that you want to learn how to jog, for example, skim or use the table of contents to start where the "how to jog" information really starts. Go for what you want to know.