In the case of voting for Trump and writing the note in the Wailing Wall, I think there’s little to no risk of having it change your prior beliefs or weaken your self-deception defense mechanisms. They both require you to be dishonest about something that clashes with so many other strong beliefs that it’s highly unlikely to contaminate your belief system. The more dangerous lies are the ones that don’t clash as much with your other beliefs.
In the case of voting for Trump and writing the note in the Wailing Wall, I think there’s little to no risk of having it change your prior beliefs or weaken your self-deception defense mechanisms. They both require you to be dishonest about something that clashes with so many other strong beliefs that it’s highly unlikely to contaminate your belief system. The more dangerous lies are the ones that don’t clash as much with your other beliefs.