Do you feel like you're lying when you say your affirmations out loud?

Do you say things like, "I am an awesome, successful winner?" 
And hear a little voice say, "No, you're not!"

Affirmations seem like a good thing, because most of what you tell yourself is negative. And you have years of negative self-talk stored up in your brain. So when you say your affirmations, it feels like a lie.