Reddit reviews Mindfulness, 25th anniversary edition (A Merloyd Lawrence Book)

No, it is not permanent
I feel like when people encounter this sissy hypno content for the first time, it comes off as a bit absurd (frankly it is pretty absurd, but a boner's a boner). Nonetheless the viewer will likely be sexually aroused to some degree due to the sheer intensity of the content. The fact that this genre you've never encountered before sexually arouses you makes you wonder: "perhaps this sissy content is for me, and I just never realized it until now." And once such a notion has crossed your mind, it brings your previously held personal identity and sexual identity into question.

The point of sissy porn is to convince you (via reinforcement, subtle suggestion, manipulation, etc) that your true identity is that of a sissy and that your previously held notions of self were merely an attempt at concealing your 'true' (sissy) identity from yourself. The more you jerk off to sissy porn, the more you reinforce this narrative to yourself.

To illustrate this, consider your question "Is it permanent?" What exactly is 'it'? Is 'it' simply your continued masturbation to sissy porn? Or is 'it' an unwanted/confusing sense of identity brought about from your repeated viewing? In either case, the answer to your question is no.

The key to preventing sissy hypno porn from controlling your life is to set aside some time for critically evaluating your personal identity for yourself (with cogent justifications), and to be honest with yourself about your true sexual identity. Doing this will help you bat away thoughts reinforced by sissy hypno porn

(i.e. when you come across a video on the internet with flashing pictures of dicks and some lady saying "your purpose in life is to be a sissy slut, and you know it's true because you're aroused" or whatever, you can rest assured knowing that (1) you define your own purpose in life, (2) her reasoning is faulty [your arousal is a necessary but not sufficient justification for your sexual identity], and (3) whoever published the video is actively trying to fuck with your sense of self in order to get more views.)

Here are some good resources:

Mindfulness, by Ellen Langer

The Power of Habit, by Charles Duhigg

Is Internet Pornography Causing Sexual
Dysfunctions? A Review with Clinical Reports