Why do believe what you believe?

If you were asked the question 'why do you believe what you believe', what would be your response.
Would one of your answers be 'it's always been that way'.
Our beliefs start as a blank slate at the time of birth. That blank slate begins to have things written on it.
It begins in a child's formative years. They minds could be looked at like a piece of sponge.
Now as adults we begin the process of organization of beliefs. Getting rid of those which have been proven as fables. Researching another belief because of the orginal is true and it is worthy to be built upon.
Then there are those that we have come into contact which we have not yet considered.
It is said that are minds have just secs to accept or reject a thought before it becomes permanent in our mind.
Our daily focus needs to be that our mind be stayed on the mind of Christ.
Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee. (Isaiah 26:3 KJV)
You ask what is the mind of Christ? It is what most of us have in our possession, it is the written word of God.
The mind of Christ is not somthing that goes against holy scriptures. Neither is it some person giving a "personal prophecy" during a revival, healing,and miracle service.
Again as I finish, it comes down again to study.
"Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth." (2 Timothy 2:15 KJV)