You have to recognize what those tricks are and then by recognizing them, by identifying them, catch yourself so that you are not then simply succumbing to the rationale that you have to keep creating and choosing to create that belief over and over again.
The positive and negative definition, both containing a perpetuation mechanism, also always brings with it the freedom to choose. It always allows you the ability to know you can change the belief. But when you operate from fear based beliefs, it is automatically keying into what you call your survival instinct. So one of the first differences that becomes evident between the positive and negative belief system, is that a negative belief (a fear based belief) locks into your survival instinct, your physical survival instinct, in such a manner as to first perpetuate the idea that if you don't follow this belief, if you don't perpetuate this belief, you will die. So it relies heavily on tricking you into believing that if you change that belief, there will be nothing left of you. That the belief is all consuming, that the belief is all representative of your true self and that if you change it, what you're doing is committing suicide.
The second thing that automatically happens, when that mechanism is engaged, when you flip into that idea of a negative fear based belief, is that it makes it seem as if it is not possible to change it. As if it simply doesn't have the ability to be changed and it traps you into a vicious circle. - Excerpt edited from 'Brick Walls Beliefs' video with Bashar
Fear based organizations and truth (related post)
image taken from: https://martysspiritualmanifesto.wordpress.com/2014/02/24/the-mechanism-of-beliefs/