1. Review Everything
When packing evaluate each of your items and question yourself "Why do I own this? What does this object provide me? When was the last time I used this? Do I really need this in the future?"
2. Check for Dust
If you have items that are collecting dust that is the easiest sign that it is time to let them go.
3. Embrace Friends and Family
Allowing friends and family to sit in and review with you allows accountability for your possessions. They will be able to ask you the questions you should be asking yourself, "Do you really need 2 waffle irons?".
4. Everything needs a place
Everyone has a designated spot for spoons in their home. If you found a spoon in the bedroom or under a table, you'd know it didn't belong there and return it to it's spot. Everything in your home should have a spot and be just as easy to put away.
5. Test your Style
Turn your clothes hanging in your closet to face back to front. If you wear an item of clothing, return it facing the correct way. After a few months if you haven't worn it then you have no use for it - donate it!
6. Take the 12-12-12 Challenge
Find 12 items to throw away, 12 items to donate, and 12 to be returned to their proper home. This should be a quick way to begin your decluttering process.
7. Donate Duplicates
Have multiple spatulas or serving spoons? 100 tangled charger cables? Throw out or donate any duplicated items, they are just adding clutter to your home.
8. Stay Calm
Remember, it took you more than a year or more to accumulate all this junk, it will take more than a day to deal with it. Take a breath, take a break, and schedule a time to get back to it. It will take time to properly declutter.