1. “Thirty, flirty, and thriving! Happy birthday to you!”
2. “Welcome to your 30s – where the best is yet to come. Happy birthday!”
3. “30 years of being awesome. Keep up the great work!”
4. “Wishing you a 30th year as bright and exciting as your future.”
5. “Happy 30th birthday! You’re now old enough to know better, but still young enough to get away with it.”

Remember, these quotes and messages can be personalized to fit the individual you’re celebrating. Add specific memories, inside jokes, or personal touches to make them even more special!