The phrase "to become an independent" means to gain or achieve independence, which refers to a state in which one is self-reliant and not dependent on others for support. Full definition
The most important outcome of education is to help students become independent of formal education. (hoagiesgifted.org)
The school's objective for students is to become independent learners in a challenging way while giving them the essential tools for success that they may need. (scwhitmoreschool.org)
When this process occurs, the adult child becomes independent from his parents. (thepracticeatx.com)