Try and keep time for myself and don't work 7 days a week for months on end, so I don't burn out.
Give the best service I possibly can for every booking, be it a 15min quickie or a 3 hour booking.
Make sure the client leaves satisfied, gets the service they expected (and more if I can
).
Get repeat business (regulars).
Be reliable, punctual, clean, groomed etc.. (professional basically).
Be friendly, polite, and make your client feel special and at ease.
Be the best I can be in every booking basically
Oh yeah, and make a lot of money in the process (which all of the above will probably ensure you will), as it keeps my motivation
up, which in turn makes me give a better service..!