to keep changing your mind about something
何かについて意見を何度も変える (nanika ni tsuite iken wo nando mo kaeru)
"He’s been going back and forth about buying a new car."
"彼は新しい車を買うかどうか何度も迷っている。" (kare wa atarashii kuruma wo kau ka dou ka nando mo mayotte iru)
a person who talks too much or reveals secrets
to be unable to act freely because of rules or restrictions
to use something until it becomes unusable
to think creatively beyond automated or programmed solutions
to be so happy that it’s hard to contain emotions
to free oneself from restrictions or limitations