I agree with Linda, daily weighing is fine, but not if you are going to let it affect your mood. I weigh myself several times a day.
In fact, not weighing myself has been my downfall on all the diets I have been on during my lifetime. Its like if I dont weigh myself I dont register that my clothes are getting tighter or that im eating too much. So I will always continue to weigh every day so that if they start to go up, I can pull things in before I regain too much.