Don't weigh yourself every day. Weigh yourself the same time of the day every time you do, and keep in mind what you ate or did beforehand - if you weigh yourself first thing in the morning but had a salty meal or a hard workout the day/night before, you might be higher than your "normal" weight. Or, if you are a little constipated for whatever reason but normally relieve yourself before you weigh, that will be different, too. Or, being dehydrated/well-hydrated. So, basically, it's not an exact science. You have to figure you'll fluctuate, and look at things on a longer-term scale.

Don't just take stock in your weight - also start measuring your arms, waist, hips, etc. Sometimes your weight goes up, your measurements go down. If you can measure body fat % regularly, that might be another good one.

Stress is a factor! If you stress out, you freak your body out, and your body figures it better hang on to that weight as some kind of bad juju is coming.

Think about how you feel. Repeat this to yourself. It will be hard. Maybe by repeating "I feel healthy, I feel good, I feel strong, I am in the best shape of my life" over and over you will start believing THAT is the key over your weight.

It might be best to step awayyyyy from the scale for a little while. Some of us get a little... anal... about measuring and tracking and watching and everything and sometimes it's just not the best approach.

Mostly I write this stuff down so I listen to it, regardless of whether anyone else actually reads it. I weigh myself weekly and sometimes I just write down the number and walk away from it - use it for data gathering, not for mulling over and pondering. After doing this for about a year, I can see the big picture - I know what I felt like, looked like a year ago, I can compare that to what I weighed a year ago, and one of them is a more dramatic change.