This advice doesn't work in all situations.

you have to

1. be high enough on the emotional scale to be able to see a brighter future
2. be in a position where you have some control over your life.

If you down at the bottom towards the edge of suicide, this is VERY BAD advice.

And if you are trapped in a bad relationship (son of a narcissistic parent)
you need to simultaneously realize you are not the bad person (not deserving of abuse) AND have someone help you out of the situation.