So in my search to fine tune mathematica to what works for me, I found a nice setting that helps separate variable declaration between notebooks. Under Global Preferences, searching for CellContext and changing from "Global'" to Notebook does this. Sweet, but now I am having trouble clearing all the variables. ClearAll["Global`"] no longer works, and so i figured since that's the setting i changed, maybe it would now be ClearAll[Notebook]. However this doesn't work either and warns that Notebook is protected.

Maybe there is a better method of operation instead of the path i'm attempting to go down. I use Mathematica to do all of my Physics homework in. So between each problem i usually do a ClearAll so i'm not contaminating possible variables between problems with wrong values.