GIVE ANSWERS - English

this sentence is talking about fish shop would you please tell me the meaning of the underlined sentence?

Visiting the fishmonger leads one to sketch little plans of moral
reform: in another, slightly better, life, one would go there all the
time. We’d become adept at preparing certain dishes. Being here, one
makes fleeting, initial contact with a latent self who poaches salmon,
tosses a lobster salad, drizzles olive oil and whose friends come
round for bouillabaisse. There is a potential future version of oneself
– who starts to come to life in the fishmonger – who lives on light,
nutritious fishy meals and whose brain is bathed in their sympathetic
briny fluids.