1. Today I did not do well on the math exam. I need to pull myself together for the physics exam tomorrow and stop thinking about today's math exam. I need to let it go and prepare for tomorrow's exam.2. I am stressed out about the new project and I need a minute to collect myself.
 pull myself together get myself together collect myself這些成語都很常用，都是整頓心情的意思
When we argue, we should not bring p unpleasant events from the past.