PHILIPPIANS 2:3-4 ~ "Let nothing be done through selfish ambition or conceit, but in lowliness of mind let each esteem others better than himself. Let each of you look out not only for his own interests, but also for the interests of others."
Ambition takes on a negative connotation in situations where men and women have sacrificed their principles to rise to the top, but you can be ambitious and maintain high ethical and moral standards. In fact, the desire to achieve is actually God-given! He doesn't expect us to ask and just sit there, and wait for the blessings to fall down from Heaven without pursuing and utilizing the talents and skills He entrusted to us in order to bring Him greater glory, for the good of others, and for ourselves.
"There are many plans in a man’s heart, Nevertheless the Lord’s counsel—that will stand." (Proverbs 19:21)