The thing about being at a loose end is that it's so very tempting to indulge in your selfish desires. I know you've probably thought about reaching into your pants, grabbing your cock and jerking away until you cum.
Well you can remove such thoughts from your mind, immediately.
You have far more important things to be getting on with. Your time is better spent pleasing your Mistress. Jerking off until your eyes cross WILL NOT please your Mistress. Listening & obeying WILL. So grab yourself a pen and some lined paper, listen and get obeying!