Rewrite the phrase to make it more formal and appropriate for a professional setting.
It's my way or the highway.
My method is non-negotiable and must be adhered to.
Complete the following task based on the instruction and optional input provided.### Instruction:
Rewrite the phrase to make it more formal and appropriate for a professional setting.

### Input:
It's my way or the highway.

### Output:
My method is non-negotiable and must be adhered to.