Sorry if this is depressing or morbed, however, we all need to plan ahead.
First Up: Funeral. Now, no1 knows when the end will come.
My advice is take out Funeral Insurance, & make sure your beneficiary is some1 you trust. Write your funeral wishes, & give them to your beneficiary.
Next up: Ensure you have a Will, so that your assets go to those YOU want, & this alleviates any bickering, well should reduce it anyway.
No 3: Always have written agreements with everything:
Friendships, Relationships, Work Places, etc.
Having written agreements, helps every1 know where they stand & have proof if anything goes wrong.