Yeah, you can also believe whatever you want and create a pseudo-reality that makes you "feel-good" through a positivity mask overlay that covers up reality. Belief is powerful. Use it wisely. Don't create a reality out of belief. Truth is not belief. Truth is reality. Choose truth over believe and live in reality not a made up fantasy to feel-good about yourself.
Take care. Peace.
It's not about creating a reality out of belief, it's about using beliefs to process your reality. For example, the same situation can happen to 2 people, and they may process it completely differently. I have friends that focus on all the wrong aspects and they're just not happy, while other friends choose to view from a more positive outlook, these people are much happier, and in a better situation because they take the right actions.