If it's that you're still on alert for danger, for yourself and others, then breathing exercises to aid in relaxation may help. And if you're troubled by the lives you took, try to remind yourself that it was self-preservation and to protect those you care about.
What others have said about distracting yourself is true, but you can't just ignore the cause forever. You need to address it head-on eventually.
Sender: Yato
What others have said about distracting yourself is true, but you can't just ignore the cause forever. You need to address it head-on eventually.