Answer:
A modern and controversial example of someone too proud/ambitious could be Donald Trump, our former president. Although Trump's arrogance and ambitions might have benefitted our country in some ways, it also caused great uproar within too.
Step-by-step explanation:
While running he was running, he made many claims that he didn't quite finish while he was our president. He also scored the lowest on the majority positive rating (kinda forgot the exact name) because of his cocky demeanor.
Hopefully this helps!