Our inner conversation is very important. Most people in this world suffer by being unconscious of the fact that it is not so much what people from the outside do to damage us but what damage we do to ourselves by affirming the negative possibilities and apprehensions, which mostly are proven wrong.
We always expect things to happen the way we expect them to, a pre framed notion. But mindfulness connects us to the Higher Mind in us so that we can see the Higher Intelligence working through everything that happens to us, within the expected and unexpected realms of life. To align with the Higher Mind is the essence of mindfulness.
Mindfulness gives us this dimension of being aware of our inner thoughts, emotions, and conversations. As we just observe them as witness they gradually get burned in the flame of awareness. Then the inner light of Truth burns bright because we are in alignment with the Higher Mind.