'self-assess' originates from the combination of 'self,' meaning 'one's own,' and 'assess,' which comes from Latin 'assessus,' meaning 'to sit beside or judge.'

'assess' changed from the Latin word 'assessus' and eventually became the modern English word 'assess.'

Initially, 'assess' meant 'to sit beside or judge,' but over time it evolved into its current meaning of 'evaluate or estimate the nature, ability, or quality of.'