be a matter of something/doing something

be a matter of (doing something)

To be contingent on doing a particular thing. It's a matter of sticking with the program in order to succeed.See also: matter, of

be (all) a matter of something/doing something

depend on something/doing something: Success in business is all a matter of experience. ♢ Doing anything well is a matter of practice.See also: matter, of, something