Congratulations! Every time we reach a milestone in our lives we stop and reflect on the past and how we arrived at our current place. I hope you realize how hard you have worked to achieve what you have.
There is no limit to what you can accomplish if you continue to do what you have been doing--being your best self in every sense of the word.
It is unfortunate that we cannot celebrate this together, but that is the consequence of living so far apart. I would like to be able to tell you in person how much respect I have for your accomplishments and how highly I think of you personally, but I can't. So I'm writing you this letter and sending all my best wishes with it. I'm very proud of you!