Good advice.
Also when you start a new notebook don't trash the other one, keep it around no matter how messed up your handstyles are init. On days when you feel like you've stopped growing, just whip out your oldest notebook and look how much you've improved. That always boost my ego and helps me to continue practicing.
I have such embarrassing shit that I hide those books like porn, but there is denying where you came from. It will be funny a few weeks/months from now where I'm embarrassed about the shit I do now.