You Have Yourself
In the end, what you have is yourself, who you are in your core, the truth and integrity that are you. In the end, this is what you have.
Your success in the outside world can depend so heavily on the opinions and actions of others that you can become confused, believing that you make terrible mistakes, wondering if others like or respect you, wondering what you did wrong, in a state of perpetual worry that you are somehow not enough.