You should only do things that increase your simulation measure after receiving good personal news or when you are unusually happy, obviously.

This isn't obvious. Or, rather, this is a subjective preference and people who prefer to increase their simulation measure independently of attempts to amplify (one way of measuring the perception of) good events are far from incoherent. For that matter people who see no value in increasing simulation measure specifically for good events are also quite reasonable (or at least not thereby shown to be unreasonable).

Your 'should' here prescribes preferences to others, rather than (merely) explaining how to achieve them.