Congratulations on your ________. I know how hard you have been working and I am very proud of you for your achievement.
I understand for sure that it is your hard work / your excellent ability that leads you to the current success. This new position, on the other hand, adds a new dimension to your life and is bound to ________. What’s more, I also believe that ________.
May all goes beautifully in your new post!
Good news travels fast! It was delightful for me to hear that ________. Please accept my sincere congratulations to your ________.
I have been watching your progress with admiration all the years, and I know more than anyone else how much effort you have put in. Now you prove to me a matured and well-rounded ________ in every respect. Judging from your current success / achievement, I am confident that in the future ________.
May all the years ahead fulfill your dreams!