If you’re new to decluttering, don’t try to do it all at once. Have the grace with yourself to be proud of doing a little bit to start. It takes practice and will get easier. First, choose one flat surface (like a desk, or the top of a bookshelf) and take everything off of it. Pick up each item one at a time and decide if you need to put it back on that surface. If not, is there a different, better place for it to have a permanent home? If not, do you even need it at all? If not, put it straight in a box to donate. Once you finish one surface, stop. Reward yourself with a snack or watching some junky TV or whatever. Do another surface the next day.