I think they are most usually 100% fake. I just read a blog post with 50 tips for living your best life.
At one point, he (or she?) advises us to: decide your goals for the next five years, and then achieve them in 2 years!
And just a little bit later, his next tip is: don’t obsess about the outcome!
Um, you actually can’t do both of things at the same time. What a loser.
In general, I most especially hate those people who say things like: if you really want something, then you’ll make it happen! Just don’t give up.
I think the people who say that 1) are pretending they achieved something big when it really wasn’t and 2) are mis-allocating credit for their own determination that ought to be better attributed to luck.