I find if I've got a pre book later in the day my energy levels stay up as I'm expecting to work but on days when I have nothing if I get no last minute bookings by about 2pm I've lost the will to work and just get mardy and moody. It also depends on the time of the month as to how I react when it's quiet. I try to practice mindfulness which helps and always reminding myself that we have quiet times and busy times and it will pass. It's not so bad lately as I have a little put aside now to reassure me when it's quiet.
Keep hope ladies - it will pick up again, you are all fabulous and deserve a good, well paid, fuck!