Not to withdraw, not to dissociate. To be aware of the tendency to do these things. To keep in mind that it is safe not to.
(It really is amazing, the difference between not suffering anxiety/fear/panic and doing so, the difference between withdrawing and remaining in the foreground of oneself, and the difference between not having physical pain/fatigue and having these.)
(I do not fully understand why I learned to berate myself for not being able to concentrate while also creating as much suffering as I dared. I would never have done this earlier.)