Trying to tell people to behave a certain way is very toxic and manipulative. There was a time in my life where I always have to follow what people told me to do and if they tell me to act a certain way then they would reward me. Its bad because it bottles up your emotions and feelings of how you really feel and then when you cannot hold it in any longer you have a mental breakdown.
Throughout my life I was told to "suck it up" or "lose the attitude" from everyone who I ever spoke to. This is one of the reasons why I became a people pleaser because if I just be happy around them all the time and do what they tell me to do then I won't have to deal with any drama. I know for a fact it was damaging my mental health and its only when I finally stand up for myself that their true colors do show. They don't care how you feel, they only care about themselves and not really understanding your mental well being.
I wish today's society would understand how damaging this is, but sadly most of the older generation still uses this to this day, even my family members which is really sad to say the least.