THE BUDDHA SAID that we should not be afraid of the past; but he did warn us not to lose ourselves in it, either. We should not feed our regret or pain over the past, and we should not get carried away by the past. We do need to study and understand the past, however, because by looking deeply into the past we learn a lot of things that can benefit the present and the future. The past is an object of our study, of our meditation, but the way to study it or meditate on it is by remaining anchored in the present moment.
– Thich Nhat Hanh
Edge of Atlantic 