All that is required to realise the Self is to “Be Still.
As you are, so is the world.
Your own Self-realization is the greatest service you can render the world.
The activity affected by causes like fainting, sleep, excessive joy, grief, possession by spirits, fear etc goes to the heart, its own place.
The question 'Who am I?' is not really meant to get an answer, the question 'Who am I?' is meant to dissolve the questioner.
You are all searching for the silence of the mountain. But you're looking for something outside. This silence is accessible to you right now, inside the center of your own being.