what it takes
The skill, ability, or wherewithal to do something. She's pretty talented—I think she might have what it takes to make it in Hollywood.
what it takes
The necessary expertise or qualities, as in She's got what it takes to make a good doctor, or Inherited wealth is what it takes to maintain that lifestyle. This idiom uses what in the sense of "that which" and take in the sense of "require." [1920]
what it takes
The necessary expertise or qualities needed for success: She has what it takes to be a doctor.