Complete your will and living will.
Complicated estate? Find an estate planning lawyer and make an appointment.
Use will planning software or an online template.
Organize your paperwork.
Create a personal documents organization system.
Keep all your important documents together, in a safe place.
Keep your paper documents updated, throw out the old, file the current.
Update your accounts/passwords and contact list as needed.
Review your personal documents organizer at least monthly.
The long story:
I lost my brother-in-law a few years ago. He was a great guy and we had fun geocaching together among other things. His death was unexpected and sudden and was a shock to all of us. He was very well organized and handled all the financial matters for he and my sister, he was the CFO of their family. It was only after he died we discovered he wasn't quite as organized as he appeared. He didn't have a will. The crazy part about that was that he purchased a will making software program. He shared it with some close friends who used it to put their wills together, but he never got around to it. My sister had to figure out where all the accounts were, passwords, userids, what was coming in and going out of which accounts. It was complicated and the information she needed was all over the place rather than in one, well-organized location.
I am on a mission to help others get wills completed, get personal documents in order and make the transition for the people left behind a little easier.