It is unnatural for any human being to be dominated by anything. Your only true responsibility is to understand this higher fact. And your corrected understanding places you in the right relationship with all gloomy thoughts and defeated feelings; which is that you simply have nothing to do with them. We are not saying to act or pretend as though dark feelings don't exist. This is very important to understand because pretending as though a rampaging elephant isn't there or that it's a cute bunny may feel good temporarily but it leaves you in danger. Seeing the elephant and recognizing it for what it is allows Intelligence to take you where you need to be -- which is out of the jungle.
No grief or disturbance of any kind is yours. These huge inner-shadows with all their howlings may be present, but where is it written that they belong to you? When we walk through a zoo, we don't identify with the shrieks and whines of the animals, so why do we fall into the self-confining cage of trying to make what is dark into what is light? Ever tried yelling at a bunch of chattering chimps or squawking birds to quiet them down? Insisting that they settle down just disturbs them all the more. Inwardly, the same law holds true. When we seek some power to make a fear go away, all we have done is empowered the fear. There is no power that can make light out of darkness. Remember this lesson the next time you feel compelled to help yourself out of a dark inner thought or feeling. One day it will be your greatest pleasure to realize that this false nature has no real power to pain you outside of what you give to it through your wrong reactions.
Go silent! This silence and inner-light will do for you what you have not been able to do for yourself. It will turn the dark inner-skies into pleasant blue ones. Go silent. Let the threatening clouds of thoughts and feelings go by. Behind them is the sun.