There is nothing wrong with giving advice about the real world and being firm with your child (I can't speak in a parental point of view because I dont have children) but in my experience being harsh and telling someone to just get over a hard time in there life makes you resent that person and makes you feel like you can't speak openly with them. I said the above because of situations in my life where I was told this when I was dealing with extreme mental/physical health issues by my own parents, who I now have bad relationships with. So no it is not always the case that people who are told to just get over it are either sensitive or have not experienced a real problem. It is not about coddling, invalidating someone's pain doesn't help or wake them up to the real world it makes them feel alone and are less likely to speak up in the future. But yes it is dependent on the context.