my way or the highway

my way or the highway — или по-моему, или никак

This idiom is used to say that if people don't do what you say, they will have to leave or quit the project, etc.; either they accept what you propose or they leave the project.

Example 1: You don't have much choice when someone says 'it's my way or the highway'.

Example 2: Right now there is only one rule here. It's my way or the highway.