I find my januarys are busy because of my christmas break and all my regulars booking in.
I december I get my ladies to book right through december, because I get so busy, then I say to them, 'Don't forget your '+ one'. This being the bookings for their christmas treatments and the '+ one' takes them through to January. This is a good way to get your bookings. I have done it this way from the beginning, even if it wasn't busy. It makes you look busy and makes the bookings come in.
If you're new, think of a promotion in January...something like a reduction on all spa manicures if booked now for january.
Good luck!! xxx