My chart looks just like that! My weight fluctuates daily too, but the trend is downward, so I don't let that get me down. Sometimes I do feel that disappointment or depression creeping up on me, but I talk myself out of it by saying stuff like "what the hell are you disappointed for? you've lost xxx pounds in less than a month and you're disappointed? Get real!" or "I look and feel better than I did a week/a month ago". I also go back to the charts and reasssure myself of the longterm downward trend. That always makes me feel 100% better