Many tasks are easier and quicker if you have someone beside you to cheer you on and help you make decisions. Purging and decluttering are NOT those kind of tasks!
Remember that scene in Sex and the City, when Carrie Bradshaw tries on every outfit she owns while Samantha, Charlotte and Miranda vote to “take” or “toss?” How much quicker and easier that would have been for Carrie if she didn’t have to consider any opinion but her own!
While friends and family mean well, you’re much better organizing by yourself. That way you can avoid second opinions that lead to self doubts, or at least keep them to a minimum.