get into one's head(redirected from get it into head)
get into (one's) head
To begin to understand how one thinks. You need to get into the criminal's way in order to find a way to stop him.
get into one's head
Also, get or take it into one's head . Form an impression, idea, or plan. For example, What strange idea has she got into her head? or He took it into his head that you want to quit. [Late 1600s] Also see get through one's head.