The only alternative I know of is to put them in an environment where grit is practiced and appreciated. Parents have to take care not to show their anxiety/uncertainty in front of the kids. Kids are followers. You have to provide them with idols which they think are your idols also.
The definition of informative is something that contains useful, helpful or relevant information or details. A lecture in which you learn a lot is an example of an informative lecture.
An argumentative essay is not just having an argument wherein it is usually emotional or heated. It is actually the use of crystal clear thinking - logic- and evidence to convince a person or your audience (the readers) to adopt a particular opinion (most of the time, your opinion) and take action.