What does 'get knocked about' mean? I referred to some dictionaries, but I couldn't find any definition that fits the context.
We all have set patterns in life. We like to label ourselves as this or that and are quite proud of our opinions and beliefs. We all like to read a particular newspaper, watch the same sorts of TV programmes or movies, go to the same sort of shops every time, eat the sort of food that suits us, and wear the same type of clothes. And all this is fine. But if we cut ourselves off from all other possibilities, we become boring, rigid, hardened―and thus likely to get knocked about a bit.