someone who has attained the wisdom which a philosopher seeks
Videos
In Donald Robertson's The Philosophy of Cognitive-Behavioural Therapy, there is an interesting exercise one can practice inspired by Stoicism:
" 3.1. Periodically try to contemplate the ideal of the sage, try to put his philosophical attitudes into a few plain words, what must he tell himself when faced with the same adversities you must overcome? Memorize these precepts and try to apply them yourself. Ask yourself, 'What would someone with absolute wisdom do today?' Adopt a role model such as Socrates, or someone whose wisdom and courage you admire."
Who would your sage be? Personally, I find it easier to consider fictional examples with the exception of some of the Stoic philosophers themselves. Possibly this might reflect my studies in Medieval literature (where the moral of the story was often of more importance than its literal truth).