The alternative I suggested in the grandparent was to change your utility function so as to make you less vulnerable - only care about things you have control over. Unfortunately, this is advice that may be impossible to carry out. Preferences, as several commentators here have pointed out, tend to be incorrigible.

I took the obvious solution to that difficulty. I self modified to an agent that behaves exactly as if he had self modified to be an agent with preferences that make him less vulnerable. This is a coherent configuration for my atoms to be in terms of physics and is also one that benefits me.