go full circle
To return to the original position, situation, or attitude where things began, especially after a long or circuitous series of changes. After dreaming of a career in politics as a young child, and then spending her college years as a staunch dissident of the government, Carrie has gone full circle and now serves as her state's representative in Congress. At the novel's end, the character's journey goes full circle to the childhood home where everything started to go wrong.