Being close to borderline on the J/P scale, I use some planning but not heavy planning. I make sure to block out enough time so that the things that have to get done that day get done. I also have in mind some things I'd like to get done but don't have to get done but I don't always write them down on paper- they're in my head. I roughly block out a schedule for the day but often times this will change and sometimes its hard to know exactly how long something is going to take. I might have something like, I plan to do X in the afternoon but I may not have a specific time slot for it. All too often, I plan more things in a day than I can possibly get done.