An excellent 3 part video from Elyot Grant [0] introduced me to the term "fiero" for this conquering after a struggle, in contrast to a simple "aha/eureka". The difference being one is transmissible, the other is not. Thought it was a nice distinction. Highly recommend the videos!

[0] Part 1: https://www.youtube.com/watch?v=oCHciE9CYfA