'Committed suicide' or 'took her own life' rather than, plainly and more accurately, 'ended her life'. And 'lost his faith' rather than simply, and again quite possibly more accurately, 'stopped believing', or even 'gained new understanding' or even simply 'changed his mind'. I have an amateur's interest in language and especially turns of phrase, and these examples, in their common form, irritate me, as does 'committed Christian' (rendered useless by association with the fervent end of things) and 'self-confessed this or that'.