I need help with several things in my home:

1. Organizing and decluttering my space so that I can easily return items to their designated spots.
2. Minimizing unnecessary items. I often have multiples of the same item, or I realize there may be a more efficient way to manage my belongings.
3. Avoiding duplicate purchases. If I can't see or find something, I tend to buy it again, which leads to having two or more of the same item.

I would appreciate any guidance on these matters.