We sometimes get beyond what our mere 3-Dimensional peon brains are equipped to experience. Our brains are geared for our survival, like crossing the street, besides that, it is up to us.
Meditate before you venture, take it seriously, use it as medicinal—it is good psychotherapy if needed. Realize that you, the Earth, others, and the Universe are all one and the same process. Then take that knowledge back to become, as you already are, one with nature. Eternity in every moment. Divinity in every particle. All is one organism.