I'm very overwhelmed because of so many things in my head

I'm very overwhelmed because I have too much things in my head:

1. I have to complete at least one chapter on my Linux course
2. I have to return a package to Amazon, which includes
   1. Figuring out how to put the box that the package came in back together
   2. Cut out and attach the labels
   3. Walk all the way to the UPS drop-off location (which is a 35 minute walk) and back home (another 35 minutes)
3. Voices in my head from my enemies that i'm too retarded to do these things