Planning is my "Happy Place". I'm always planning a trip, usually several, and often fall asleep thinking about it. This past summer after setting my boat down on the shores of Conmee I spotted two fat largemouths.......that started me planning a Largemouth/panfish trip in the Q (how cool would it be to fish plastics in the treetops for fat bass)

I try and get in an hour workout in the evening and always have a map or some topo of a lake out on the table.......the everglades, quetico, Georgian Bay, 
WCP etc. Between sets I hit the pause to collect my stuff and have a big magnifying glass out to "plan".

Of course you can plan all you want but the ability to shift on the fly has its merits as well. I like a trip to have at least a basic outline however.