Thank you note reminder!

I've just spent a solid 20 minutes obsessing about whether I wrote a thank you note to a particular person.  I sent a stack of "thank you notes" a couple of days ago, but never wrote down who I actually wrote notes to.  Well....now I'm unsure as to whether I wrote a note to this person and I am totally at a lose as to whether I should write ANOTHER note, and risk being duplicative and appearing to be a total fool loosing her marbles, or whether to just risk it and perhaps be "that" person who doesn't write a thank you??!!  I haven't figured out which is worse yet.  Anyway, moral of the story....this is the gift season, and since you will want to be that nice person who remembers to write thank you notes....make sure to keep a list of who gave you what and who you send notes to!!  Signed, ME {lv}