noun
first half of one's life
Refers to the earlier part of a person's life, often up to around middle age. Used in biographical or reflective contexts.
彼は前半生を海外で過ごした。
He spent the first half of his life abroad.
自伝では前半生の苦労が詳しく語
In the autobiography, the hardships of the first half of his life are described in detail.