In many ways, Nature reflects how we are feeling. When we feel dismal, the sky is grey and cloudy. When we feel very emotional, rain may very well be falling outside. When we are filled with warm, loving thoughts, then often, the sun shines and life is beautiful!
How does this work? Well, part of it is that we all create our own reality. And part of the occurrence is that others are often feeling the way that we do. You might say that we all create our own reality together.
The challenge becomes how to continue to feel warm and loving when others do not feel that way. How do we stay Buddha-like? One of the easiest ways to stay in that space of harmony is to be in the present moment - to leave the past behind, and to not think or worry about tomorrow, or next week. Do not listen to the "what if..." statements that start to grow in your mind. Send them away, and continue on, thinking of the warmth and brightness and lightness. It works!
Blessings.