psych someone up
psych (someone or oneself) up
To increase someone's or one's own excitement, confidence, or mental preparation. The coach psyched us all up just before we headed out onto the field. I was pretty nervous before the test, so I took a few minutes to psych myself up before I started.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
psych someone up
tv. to get someone excited or mentally prepared for something. (see also psyched (up).) I psyched myself up to sing in front of all those people.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.