Be very wary in the days when false prophets arrive in numbers selling doctor feel good remedy literature. They have no answers but profess to know all. All writing and publishing books.
I have learnt to trust my own experience and am comfortable with it.
Not with over confident lecturers who probably in reality have last a lot and have nothing to re invest with, except the understanding that the market is not what it seems to be and they had to learn the hard way.
And now they are addicted. Addiction will make people do anything. Even sell their soul.