All negativity is caused by an accumulation of psychological time and denial of the present. Unease, anxiety, tension, stress, worry - all forms of fear - are caused by too much future, and not enough presence. Guilt, regret, resentment, grievances, sadness, bitterness, and all forms of nonforgiveness are caused by too much past, and not enough presence.
Eckhart TolleWhen you meet another human being, you meet the physical self, then you meet the psychological self that's behind it, which is their mental conditioning, their patterns of behavior and so on. And then, there is a deeper level to every human being that transcends all of that. I can only sense that in another human being and relate to another human being on that deeper level if I have gone deep enough within myself.
Eckhart Tolle