superambitious

/ˌsupəræmˈbɪʃəs/
adjective
  1. Having an extremely strong desire to succeed, achieve, or reach very high goals.
    • His superambitious project aimed to build a rocket that could reach Mars within five years.
    • She is superambitious and plans to become the CEO of a major company by age 30.
    • The superambitious student took five advanced classes and still found time for three clubs.