Short answer: You can’t.
To be your own muse,
To take inspiration from yourself,
Consider how you develop interests in the first place,
They do not bloom from the self,
You steal influences from others,
You recast them into your own,
Artists never make the last call,
Artists form part of the larger creative scenius,
Popularity makes you sound a lot like sounding like yourself,
Until there’s no more (self) evolution.