'Stop obsessing!' (3,2,2)
I believe the answer is:
let it go
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stop obsessing</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for let it go that I've seen before include "Hit song from Disney's 2013 animated feature film Frozen" , "Refrain from comment" , "Excuse something" , "Disney tune" .)