If we do not work for individual transformation, talking about world peace is just entertainment.
When you are no more identified with your physicality, you become available to Grace.
The fear is simply because you are not living with life, You are living in your mind.
When you absolutely throw yourself into your activity, your energy will only grow.
In the vastness of the cosmos, everything is going perfect, but one nasty little thought in your mind can make it a bad day. That is lack of perspective.
Meditation means to go beyond the limitations of body and mind.