bad things grow fast

If you are not happy with yourself, you tend to behave not very well with others. The others may not understand that this is because you are not happy with *yourself*, they may mistake it that you are not happy with *them* or are simply *rude*, and this will further amplify the first cause - of not being happy with yourself.

Why all negative things in the world have to be self-reinforcing, and exponentially growing?