All fear, anticipation, and worry fade, because we have dropped the idea of time. We understand that the future is only a concept in our mind — just a thought, with no actual reality. The future only arrives in this present moment. And the only moment we need to take care of is this one; when we learn to do that, all other moments will be taken care of in the same way.
from the lovely book by Mark Coleman, Awake in the Wild, Mindfulness in Nature as a Path of Self Discovery