Losing weight, but feels like its not real

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Not sure if its just me, but I feel like I'm losing weight, not from all my hard work but by accident. I have lost 10pounds in 2 months, but I keep on waiting for my work to pay off. I know what I'm doing is working, it's just hard to believe after so many years of trying to lose weight, that its actually happening. I sound a bit silly, but I need to look at this as a lifestyle change