Birthday-boy Jamal updates us on his job search and wrestles with the need for employment vs the desire for fulfillment. Yacine finds encouragement in rising frequency of 'small wins' in his business and explains the significance of his tattoo (as alluded to in episode 2).
The tattoo - reading "This is water." - is based on a commencement speech by the late author David Foster Wallace. If you dig the concept, you're encouraged to google the phrase and find the original speaker's words.