I'm trying to be a stoic, and I will deliberately try to accept anything that I cannot influence in this very moment. Approaching medial issues, I think that the only thing you have to accept (until your death) is that your previous attempts at improving have failed; so as long my son's hearing is not good, I'll keep on looking for things to try out. There are time and cost constraints of course; sometimes I go for weeks without researching anything to improve the situation. But the motivation to do something returns naturally when he's in pain again, or is misbehaving very badly because of this.