No outward thing - nothing, nobody from without - can hurt...

No outward thing - nothing, nobody from without - can hurt me inside, psychologically. I recognized that I could only be hurt psychologically by my own wrong actions, which I have control over; by my own wrong reactions (they are tricky, but I have control over them too); or by my own inaction in some situations, like the present world situation, that need action from me. When I recognized all this how free I felt! And I just stopped hurting myself.