מזל טוב to all on this great occasion.
Although it is a great simcha, nevertheless there is a place for some words of mussar as well.
Here are a few mussar thoughts from gedolim of the past that come to mind.
1) מסכת אבות, פרק ב, משנה ח - רבן יוחנן בן זכאי קבל מהלל ומשמאי, הוא היה אומר, אם למדת תורה הרבה, אל תחזיק טובה לעצמך, כי לכך נוצרת
Rabban Yochanan ben Zakkai said, if you learned much Torah, don't hold yourself great because of it, as therefore you were created.
2) You went through Shas - but did Shas go through you (attributed here to the Kotzker Rebbe)?
3) It is easier to learn through the entire Shas than to change one bad middah (character trait) - Rav Yisroel Salanter.
May we be zoche to internalize our learning so that it becomes to us a סם חיים, an elixir of life.