Imagine that as soon as you are born and you develop the ability to think, your thoughts are like passengers boarding on a plane & going through a security check.
Most of them go through the check without a problem, and in that sense are 'safe thoughts'. They simply go through and out of your mind without any sort of identification. Others, on the other hand, are judged as 'bad', 'wrong' or 'unacceptable' thoughts.
These go to jail.
As we grow older, the thoughts that we 'jail' increase in number because, based on the person we start believing we are, we form a belief system of 'right' and 'wrong', of what deserves punishment and what doesn't.
But the more thoughts we imprison, the more chains we tie around ourselves.
Few know that the plane itself is an illusion, let alone the security check and the prisoners.
No thought is ever true.
No event can last in time unless you carry it in your memory.
No action is unforgivable.
Nothing after 'I am' means anything.
The path to Freedom, therefore, is to notice the imprisoned thoughts, and let them go. You don't need to dwell on them, to delve into them too much, to see why they happened, or to make many prisoners out of one. All you need to do is notice that you're holding one, open the cell door, and let it go.
And that is where faith comes into the equation. Without having faith that something beautiful, peaceful, joyful - just something worth going for - is on the other side of your fears, you
wouldn't dare to face them. You will always hold them as true, make them a part of who you are, and let these fears guide your actions.
This video illustrates this point powerfully-Will Smith on Skydiving.
There is only ego and non-ego, and all that is ego is illusion. The only way to remain in the peace of everything that is outside of ego (that happens to be infinite & eternal bliss) is to notice all the fears that compose the ego. And all that is ego is a fear in disguise. Hence the stronger your faith, the deeper in your self-made prison you can go to uncover and let go of deep-rooted fears.
Do not believe in yourself, because that is believing in an illusion and asking for pain. Believe that there is something much bigger and much more beautiful than your ego self - your True Identity - and take the necessary steps to Be it.