have it in you to do something
have it in (one)
To have or possess a specific skill or trait. Wow, Alice is a beautiful singer—I didn't know she had it in her. Honestly, I'm not sure he has it in him to deal with this.
See also: have
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have (got) it in you to do somethinghave the capacity or potential to do something. informal
Farlex Partner Idioms Dictionary © Farlex 2017