This is the 17128th most frequent Russian word.
станешь
"Станешь" - "you will become" or "you will start."
Here, 'станешь' is used to express the transition into a better state or condition in the future.
Если ты будешь стараться, ты станешь лучше.
If you try, you will become better.
In this sentence, 'станешь' indicates the natural progression or change associated with aging.
Когда ты станешь старше, ты поймешь это.
When you grow older, you will understand this.
Here, 'станешь' questions the possibility of achieving a professional status through continued effort.