Definition of do one's own thing in US English:

do one's own thing

phrase

informal
  • Follow one's own interests or inclinations regardless of others.

    • ‘The only way forward is for us all to work together; we can't have sport on one side and everyone else doing their own thing.’
    • ‘However, there are too many individuals doing their own thing.’
    • ‘People began to think about doing their own thing.’
    • ‘Though we did walk together as a group, everyone was virtually doing their own thing.’
    • ‘We were always independent, doing our own thing.’
    • ‘It's just that everybody's doing their own thing.’
    • ‘It's just a case of going out there and doing your own thing.’
    • ‘That is what you have to create at a club, not 15 individuals doing their own thing.’
    • ‘It's always welcome to find a band that are not following the crowd and really doing their own thing.’
    • ‘‘It was that teenage thing of doing your own thing as a student,’ Diana recalls.’