If you start in the kitchen, pick a top cabinet and purge the top shelf. Purge the items you don’t use, never really liked, are broken (you’re never going to be less busy than you are now, so when will you find time to fix that broken mug?), have too many of, or don’t belong in that cabinet. Work on one or two shelves on Day 1. On Day 2, work on a few more. When you finish that cabinet, move right to the next cabinet and declutter a few more shelves each day. Rinse and repeat. After decluttering the top cabinets, do the same with the lower cabinets.
If you start in the living room, start anywhere and work a few feet to your right each day until you work your way around the room and back to your starting point. You could even work to your left. Either way, pick a place and start.