People decide to declutter for different reasons and at different times. Here are some reasons why you might decide to declutter:
When thinking about decluttering your home, as you consider each item, think about whether you should keep it, toss it or sell/give it away. And remember, decluttering is not a process to be rushed. Relatives and friends may pressure you to declutter more quickly than you feel comfortable with. They will not have the same attachment to your possessions that you do, and they may not understand the process you have to go through to decide what to do with your belongings. Don't be pressured by them to make decisions or take actions you don't feel happy with.
If you are limited by space, you might consider hiring a small storage unit where your precious things can be stored until you decide who to give them to or what to do with them.
If you're not sure of the value of particular items, you could get them valued by a professional (eg, jeweller or furniture expert). This may help you work out who you want to give the item to or whether you will sell it instead.
If you decide to sell some of your possessions, you can do so through an internet selling site, such as trademe, or through a second-hand or antiques dealer, who would buy the item off you to on-sell through their shop.
No, but take the time you need to make decisions you're happy with.
There are professional organisations and people that can help you declutter, and some specialise in helping older people who are moving. Use the internet to help you search for ones in your region.