When you speak from the mind, from the past, you already know what you are going to say. It's dead! It's not even alive for you, so how do you expect it to be alive for other beings? You have to come fresh, from that place.
The mind is afraid of that place. It is always rehearsing, wanting to be brave. Trying to remember its best tricks.
You have to come from nowhere. It is very simple. Then it is not like you are speaking as a person.
If you want to be One with Truth, you must disappear.
How to vanish? Let the words of Satsang enter your Being and something will begin to deconstruct.