steel oneself for

steel (someone or oneself) for (something)

To cause someone or oneself to be mentally and emotionally prepared for and hardened against some difficult or unpleasant task, situation, outcome, etc. As horrible as the prospect may be, we all must steel ourselves for war. I know I'm tough on you, but I'm trying to steel you for the challenges you'll face later in life.
See also: steel

steel oneself for someone or something

to prepare oneself for someone or something difficult or unpleasant; to get ready to face someone or something. Aunt Helen is coming for a visit. We should steel ourselves for her. I think something is going wrong. We had better steel ourselves for a shock.
See also: steel