According to Osho, aging is a biological process that happens to the body with time, while maturity is inner growth born of awareness. Mere experiences add years and memory, but without alert presence they don't become wisdom. Aging plus awareness equals maturity: you learn, stop repeating mistakes (like anger), and understanding naturally shapes tomorrow - no vows, only insight lived totally.
Getting older happens by itself; becoming wise happens when you pay full attention and learn from your experiences.