It seems to have become a popular idea that celebrating achievements, even after successfully realizing a small goal, is important to continue developing and staying motivated. 

I'm looking for a Torah source that speaks to this point. I know there are many sources which say that the correct posture for a Jew is to attributing all (good) things to Hashem and to be humble etc. These ideas do not necessarily have to contradict the act of celebrating your achievements, but they could and so I'm looking for sources to begin looking into this.