Strengthen the individual. Start with yourself. Take care of yourself. Define who you are. Refine your personality. Choose your destination.

Jordan Peterson

The first and greatest victory is to conquer yourself.

Plato

To wish you were someone else is to waste the person you are.

Sven Goran Eriksson

By taking responsibility for yourself, you can stop relying on others to take responsibility for you.

Vironika Tugaleva

The ultimate power in life is to be completely self-reliant, completely yourself.

Robert Greene

Just stick to your principles. And rest assured that, if you remain true to them, the same people who made fun of you will come to admire you.

Epictetus