And we should strive for what God wants for us - illustrating God's power, furthering the Gospel, developing and using our spiritual gifts, etc.
Balance is crucial.
Let's examine some of what the word of God has to say about ambition. Therefore in Christ Jesus I have found reason for boasting in things pertaining to God. Therefore beseech the Lord of the harvest to send out workers into His harvest. But earnestly desire the greater gifts. And I show you a still more excellent way.