take it into one's head

To be seized with a sudden (often ill-advised) notion.

Japanese Meaning

突然（しばしば軽率な）衝動に駆られ、ある行動を思い立つこと。 / 急に、そして時には無分別に何かをしようと考えること。

To take it into one's head to quit one's job on a whim can cause serious problems.

突然、軽率な思いつきで仕事を辞めようと思い立つと、大きな問題を引き起こすことがある。

Sense（1）

To be seized with a sudden (often ill-advised) notion.

takes it into one's head

（ present singular third-person ）

taking it into one's head

（ participle present ）

took it into one's head

（ past ）

taken it into one's head

（ participle past ）