Weighing every day is fine if it doesn't cause problems with your mental game. However, weighing more than once per day is POINTLESS. You have to weigh at the same time every day (or week, or whatever) under the same conditions for the numbers to mean anything at all. Otherwise you're comparing hamburgers to oranges (not even apples to oranges!).
For more info on a sane approach to the scale, check out this article:
Why the Scale Lies
If you understand what the scale can and can't do, and if you don't find those numbers DEmotivating, weigh away. But, my personal opinion is if you start saying things like, "I can't help it," then scale-hopping multiple times per day, or even daily, is just another compulsive behavior, and you'd do well to put the scale away for a few weeks to break the compulsion.
When I started my current journey, I knew those numbers always hurt more than they helped, so my counselor weighed me weekly but I didn't even see the numbers for 6 months! That freed me to concentrate on my BEHAVIORS rather than "weight loss" and it really reinforced the "this ain't a diet, but a way of life" approach. It was an invaluable experience.