Answer:Arrogance
Step-by-step explanation:
Ferrari describe arrogance as a disease that can kill.
Ferrazzi was the president of a foundation he was happy and wanted people to know about it in school, he made calls to and then cofounded with a prominent intellectual. He called some alumni to hear there opinions, and an alumnus called him of his donation to the foundation. ferazzi immediately discarded every other people who pledge to donate without knowing what the alumnus donation was.
He wrotes that "Help others up the mountain along with and before you."
Ferazzi said working as a team is the best and never leave your team outside any decision as a leader because you may not know the mistake your decisions alone can cause. Working as a team bring about togetherness and each person contribute a quota which could help achieve alot. He made a rash decision alone which he later regretted.
maintaining the relationships that brought one success at different points throughout his/her career can fetch more opportunities.