I know that GTD advocates only using the calendar for things that are day and/or specific. But, how do I handle things that are important, but not day/time dependent? If I don't block out specific calendar time for these types of items, other things seem to fill in my available time, and I never get to them. Any suggestions for handling these types of items? I realize I could put them on a next actions list, but if my calendar continues to fill up with other items, when do I find the time to work on these high value items?