Existence precedes essence. Define yourself through action, embrace radical freedom, and create meaning in an indifferent universe.
Existentialism is the philosophy of Active Responsibility. Unlike a chair, which is designed with a purpose (essence) before it exists, a human being exists first, and then defines their purpose through every choice they make. You are not a 'thing'—you are a Possibility.
Most people live in what Sartre called 'Mauvaise Foi' (Bad Faith)—pretending they have no choice but to follow social roles. Existentialism strips away these excuses, leaving you alone with your freedom.
You are always free to choose your attitude.
You own every consequence of your existence.
Aligning your actions with your chosen self.
"Man is nothing else but that which he makes of himself."
— JEAN-PAUL SARTRE