“Oh, it was nothing” when it was three months of work isn’t humble. It’s hiding.

Waving off real work is not modesty, whatever it sounds like from outside. It removes the thing from view, which conveniently removes it from judgment too, and that safety is usually the real motive. It also teaches people that what you do costs nothing, which becomes its own problem later when you need them to understand what you gave.

Practice one accurate sentence instead. It took three months and you are glad with how it came out. No inflation, no shrinking. Saying the true size of something out loud is uncomfortable the first few times and then it is not.