to understand or comprehend something difficult
難しいことを理解する (muzukashii koto o rikai suru)
"It took me a while to wrap my head around the new software."
"新しいソフトウェアを理解するのに少し時間がかかりました。" (atarashii sofutouea o rikai suru no ni sukoshi jikan ga kakarimashita)
to be the first to do something new or innovative.
to plan carefully before taking action
to be so happy that it’s hard to contain emotions
a person who only works becomes dull and boring
to choose to participate
A sign of hope after a long period of difficulty.