Learning how to focus and building a high quality work ethic is important, but your advice is horrid. Following it is likely to lead a person to becoming a burnt out husk of a human being by the time they are 40, if not sooner.
Basically, each of the 5 points I listed comes down to, "Momma said there'd be days like this, days like this Momma said!"
I guess, at this point, I'd be curious about what, in particular you found "heinous", "poisonous", "horrid", or likely to lead to one becoming a "burnt out husk of a human being" before the remarkably specific age of 40. However, I suspect that you'll find you've imported a bit of your own baggage into your explication.
Even a bit of humility about whether your personal vantage point and opinions are accurate pictures of the entire "real world" would help...