noun, noun or participle which takes 'suru', intransitive verb
mental preparation; anticipation; expectation; plan
Refers to a mental readiness or a plan one has in mind, often about future events. Used as a noun or with する to mean 'to mentally prepare' or 'to anticipate'.
He is making mental preparations for his life after retirement.
試験の結果は悪いと心積もりしていたが、意外と良かった。
I had anticipated a bad result on the exam, but it was surprisingly good.