What does if you can dream - and not make dreams your master means in the poem if by Rudyard Kipling?

This line from the poem "If" by Rudyard Kipling emphasizes the importance of balancing ambition with practicality. It advises to remain grounded and not be consumed by unrealistic dreams, but to still pursue them with determination and perseverance. In essence, it is about maintaining a sense of perspective while striving for one's goals.