follow in footstepsfollow in (someone's) footsteps
to do the same job or the same things in your life as someone else, especially a member of your family.
He followed in his father's footsteps and went into the army.
follow in (one's) footsteps
To pursue something that someone else (often a family member) has already done. My father was an engineer, and I plan to follow in his footsteps and study engineering in college.I am following in my sister's footsteps and joining her old sorority.