It is about degrees. I used to be miserable trying to "behave" and realized that I was in the wrong environment. I was not a fit for that company or that culture. Working in tech has made it that I don't need to behave since most of my natural tendencies are acceptable there. How bad would it be if someone said that you have to become something I am not.
I agree that my comments could be harmful if it was the only one, but there needs to be balance in advice.
I assume this person is "successful", may be that's the faulty assumption.
Or you might find people you do want to listen to. Sometimes you really are the only sane person or THE most interesting person in the room. It isn't you who is the problem but the room you occupy.
Think about this, if you were in a room with Jeff Bezos, Mark Zuckerburg, and Bernie Madoff, how much talking would you be doing?
Writing good content is hard. If a writer could do it, they are rarely going to be writing it to sell. So gaming the system and writing average content (much easier to produce) and gaming the system is the best way to go.
As tired as this cliche is, I have to ask if you workout.
I found that lifting or intense cardio helps me move out of my funks.
When I'm suffering through an intense workout I don't think about anything else. When I finish the workout, I can be so exhausted that I pass out and go to sleep. that in itself is a blessing.
Lastly, so much of stress is self-imposed. You are where you are, and whatever plans you have, are determined by you.