Bach Two-part Invention No.10

This is the piece I am working on right now. Judy asks to keep a journal on private lessons. Tonight I went downstairs and practiced 1.5 hour. Out of my curiosity I googled how Invention No.10 sounds like. I found one piece played Glenn Gould on YouTube. He plays almost 3 times faster than I do. And what he plays sounds light and happy. My fingers are so stiff that I want to cut them off.