Every time I say "I'm a f***ing god" I feel...

Which means you need it.

Plenty of people lacking confidence and self esteem use this technique. It can be particularly beneficial when facing a challenge or uncertain situation. For example, a person fearful and anxious about giving a public speech or nervous as they step on the ice to compete for a medal might say, "Im a f***ing god..." Nothing wrong with a bit of a boost to try to calm the anxiety.

Those that already have confidence, i.e. the professional public speaker going in front of only 10 people or the athlete playing a pick up game doesn't use the technique, because their confidence is sufficient for the task at hand. Still, even the professional speaker might use the technique facing a packed stadium or the athlete going for a gold medal.

It's relative.

Have you heard/tried morning rituals? How does your morning look like? Do you use affirmations, imagination, visualization?