I'm scared that Santa Claus won't get me anything for Christmas...?

Christmas is coming up and I'm scared... I'm scared I'll wake up on Christmas morning and not have anything because I was bad this year. I'm scared that I will get a lump of coal. It is causing me so much worry and stress in my life and I keep having nightmares about it. I think Santa Claus hates me... What if I'm good from now on and give out lots of presents and leave out loads of cookies and milk? Will that be enough? What if I leave Santa Claus a $50 dollar bill and a nice thermal jacket by the chimney? How do I know if I'm on the list or not? I even changed my avatar to a Santa Claus to pay homage to him; I know he's watching me right now.