`贪婪 (tānlán)` is not “Ambitious”: English speakers often use “greedy” in a semi-positive way, like “I'm greedy for success.” Translating this as `我对成功很贪婪` sounds very wrong in Chinese. It implies you would lie, cheat, and steal to succeed. The correct word for ambition (neutral to positive) is `
野心 (yěxīn)`.