Belief Systems (BS) are like blood a Tick sucks. The Tick sinks into the skin and begins sucking the life out of the body. If you do not notice one right away ... the Tick will get bigger and bigger as it fills with more and more blood/thoughts/beliefs, while the body becomes emptier of Life.
"Who you think you are is the Tick/BS." When one beings to see this, that they have identified their self as a blood sucking insect (and even that is a belief), then one can light a flame and burn it out. Sometimes this is instantaneous and it just pops out and is let go of. However, you don't always get the whole thing on the first attempt, yet you have to get all of it ... for if you leave the head/"I" thought in ... the collecting of blood/beliefs will ensue.
Beliefs can be as simple as I don't like people with (fill in the blank) hair or as complex as (fill in the blank) skin, it can be religion ... any religion that has one think it is better than another or self-esteem that has one thinking it is less. Yet it always boils down to the "I" thought which all thoughts attach too and lead one to believe it is separate from another.
If one is courageous they pull out the tick/"I" with one full swoop, this is the simplest and most direct route ... however, not the easiest and rarely done.