It is definitely recommended, because being in a calm disposition helps to increase the likelihood that whatever choice you make is the one that you genuinely want. Whereas if you make decisions when you are distressed, and your emotions are in a heightened state, then you risk making a decision that you may regret and did not actually want - should you survive. This is not to say that wanting to CTB while in a bad way emotionally is invalid though, because impulsivity is not the same as irrationality; it is possible to make a rash decision that is also understandable - such as jumping out of a window from a burning building. Also it raises the question of how do we even define what is and is not irrational? But that is for another time; I sense that my post reads like a rant at this point so I will stop.