A rub is just that. It slightly hurts. But it also polishes. Rough diamonds are polished after rubbing them. Then they shine.
When we are hit by turbulence in life's daily grind, just accept the shaking. There is no need to react to everything. Just stay calm. Be an observer. Don't be irritated by a rub.
A rub is our test. We can react with anger, revenge or choose the clothing of forgiveness. You are being tested. Don't be irritated by a rub.