Wishing someone success is a thoughtful gesture, and when done in English, it can add an extra layer of meaning and connection. The phrase "祝你好运" translates directly to "wishing you luck" or "good luck to you" in English. However, depending on the context and relationship with the person, there are several ways to express this sentiment.

For a more formal setting, you might say, "I wish you every success," which conveys encouragement and high regard. If you're addressing a friend or someone close, "Break a leg!" is a common informal expression used in English-speaking cultures, though it literally means "good luck," especially before a performance or important event.

In professional environments, phrases like "May your endeavors be fruitful" or "Wishing you prosperity and achievement" could be appropriate. These expressions carry a sense of optimism and support for future successes.

When crafting your message, consider the tone you want to convey—whether it’s casual, formal, humorous, or heartfelt. Personalizing the message based on the recipient's goals or achievements adds sincerity and makes the wish more meaningful.

Remember, while direct translations work well, adapting the message to fit cultural nuances and individual preferences often yields the best results. Whether you choose a simple "Good luck!" or something more elaborate, the key is to let the recipient know they have your support and encouragement as they pursue their aspirations.