Significant emotional events. Knowledge - what we know and what we don't know. Results we have gotten in the past. Results in advance - our beliefs can be based on how things are going to be. The quickest way to change beliefs is to change results in advance.
Faith is an example of taking results out of the future.
Take a small action to produce a small desired result. Beliefs are built upon experiences. Your identity is built upon beliefs. Unlimited beliefs give you great power. Anthony Robbins, in his technology called Neuro-Associative Conditioning, describes a success cycle to use as a shortcut for making decisions.