PR is a form of propaganda - the StarSelf-as-miniState broadcasting how it would like to be seen by the general public
(cf Trump pretending to be his own publicist, variously known as John Miller and John Barron - later the name of his son, intriguingly - procreation as narcissistic duplication, plus he'd already reused Donald for his first-born
(oh yes he's the Great Pretender.... a pretense of Greatness)
The glam parallel supreme (although there are many - Alice "I love to tell lies" Cooper, Bowie) is Marc Bolan.
From an early draft of S+A:
Positive thinking is a form of self-hypnotism, the beaming into the unconscious of "mental photographs", power-poses, heroic self-images, self-actualisation maxims, affirmations etc - a form of internally introjected propaganda.
In The Power of Positive Thinking Norman Vincent Peale (Trump's pastor as a young man) advises: "Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding. Hold this picture tenaciously. Never permit it to fade. Your mind will seek to develop the picture ... Do not build up obstacles in your imagination."
Poz-thinking infected forms of religion (e.g. Joel Osteen's prosperity gospel) (although positive thinking is itself a religion, a perversion of Protestantism) explicitly encourage believers to avoid contact with viewpoints that contradict one's wishful thinking. Osteen sermonises about how one's seed-of-greatness will not flourish in a soil of negativity - it is imperative to surround yourself with positive people (i.e. people who will not discourage you with their more reality-based judgements and lowered expectations, fatalists of every stripe). Similar to the techniques of Scientology, where the organisation encourages / forces the convert to abandon friends and family members who are not down with the positivity program and to instead spend one's entire social life within the belief-reinforcing enclosure of the community of believers.
Another way of doing this is to constantly reshuffle your cabinet to get rid of realists, people who give any credence to the expertise of the reality-based community.