Sometimes, you have to step outside of the person you've been and remember the person you were meant to be. The person you want to be. The person you are.
You don't want modesty, you want humility. Humility comes from inside out. It says someone was here before me and I'm here because I've been paid for. I have something to do and I will do that because I'm paying for someone else who has yet to come.
We want to be famous as a writer, as a poet, as a painter, as a politician, as a singer, or what you will. Why? Because we really don't love what we are doing. If you loved to sing, or to paint, or to write poems, if you really loved it you would not be concerned with whether you are famous or not.