Just because you became a husband you are raising kids vs you are becoming a husband to raise kids.
Being a principal in a school and making a good school vs being a principal to make the school good has huge difference.
Teaching as you become a teacher or being a teacher to teach is very different.
Making software to become a programmer or making software only because you became a programmer.
Just because you became the president you are making the country vs you becoming the president to make the country better.
so the list goes on . Understand the difference and act wisely.