Negativity and suffering have their roots in time
What you perceive as future is an intrinsic part of your state of consciousness now. If your mind carries a heavy burden of past, you will experience more of the same. The past perpetuates itself through lack of presence. The quality of your consciousness at this moment is what shapes the future-which, of course, can only be experienced as the now.
What is it that determines the quality of your consciousness? Your degrees of presence. So the only place where true change can occur and where the past can be dissolved in the now