What goes around comes around is not a new insight. It is something most of us intuitively know but easily forget, as we attempt to hold on to most things which come to us. What we don't realise is the ripple effect can easily become the cripple effect. Everything we think and do not only ripples out into the world, it also creates an impression on our own consciousness inside.
If one day you decide to get really angry (very unrelaxing) at someone, then you create a memory of your irritation and carve a kind of scar or groove on your consciousness (non-physical of course). Within this scar or groove is a recording of the image of the person as you have decided to perceive them, and the energy of your anger surrounding that image. Remember, you put it there, not them. Two days later you see the same person and that triggers the image and the anger which you have already recorded within. The emotional turbulence inside your consciousness makes it very hard for you to remain positive, connect and communicate effectively, positively and harmoniously with them.
In effect you are crippled and clouded by your own emotion. Most of us experience this, sometimes many times a day, but refuse to see that we cripple ourselves, preferring to blame the other person. Which is why we can stay crippled for a long time and not even realise it.