After the accident, he was half the man he used to be and could no longer perform his job.
После несчастного случая он стал гораздо хуже и больше не мог выполнять свою работу.
Definitions
A phrase used to describe someone who has lost strength, ability, confidence, or vitality compared to how they were in the past. It often implies that the person is now weaker, less capable, or diminished in some significant way.