Wow! I’m surprised at how many of those I’m actually doing already! Right now I’m working on hard-surface modeling, and when I have “mastered” it I’m going to move on to study mechanical rigging. After I’m done with that, I’ll “master” the following subjects, in that order:
Sculpting
Animation Nodes
Shading
Texturing
Organic Rigging
Animation
Scripting
Then I’ll go over that list again. And again. Hopefully by then I’ll be good enough to make tutorials, which is something I’ve always wanted to do.