Before you jump into that project, let’s make sure you have set yourself up for success and completion. You can do this by reviewing the Six Stages of Getting Organized. These six stages apply to most any organizing project, whether you’re clearing that spare storage room (aka guest bedroom) to create an office, or decluttering the living room, organizing the kitchen shelves, cleaning out the garage, or tackling that pile of papers.
The third stage of organizing is SORTING. I took months trying to decide if sorting came before letting go or after. It's necessary to see all that you have when you're trying to decide what to let go (Stage 2). But you also need to sort 'like with like' before you start to physically place or organize your things (Stage 4).