'self-reproachful' originates from the combination of 'self' and 'reproachful', where 'self' refers to one's own person and 'reproachful' means expressing disapproval or disappointment.

'Reproachful' comes from the Old French word 'reprochier', which means to blame or criticize, and 'self' has been used in English since Old English times to denote one's own person.

Initially, 'reproachful' meant expressing blame or criticism, and when combined with 'self', it evolved to mean being critical of oneself.