Please Help!-Promissory note?

[Alex Locklear]

I currently have a house under an option contract for 212K and trying to sell to an end buyer for 220K. I want to make this easy as possible and am trying to avoid assigning, double close, etc.

I've heard one can "release" their interest in a property by having the seller sign a promissory note to pay me the difference between the two contracts; I've also hear of getting paid as a lien holder?

Can someone please explain this process/ the steps involved?

Thanks in advance!!