Is the Scale Your Friend or Enemy?

For many years I let the scale define who I was as a person.  I would weigh everyday and if I wasn't where I thought I should be I would eat because I was depressed.  Then if I was under where I though I should be, I would eat to celebrate.  In essence, when I was losing weight, weighing everyday didn't work for me.  Now that I am at my goal weight, I can weigh everyday, but I still chose not to.  I like what was recommended to me when I was losing.  Once a week is enough at the same time everyday because otherwise it is too easy to get thrown off by water weight etc. due to the flucuations in our bodies.  I tell my clients to go by their clothes, by their inches, and body fat more so than the scale.  What about you?