I choose to approach life with what the Japanese call "shoshin" - beginner's mind. That is to approach all things with the attitude "I know nothing".
I believe in theoretical physicist Robert Penrose's theory of a cyclic universe. The universe has no beginning and has no end. It is on an endless cycle of birth, death, and rebirth over an extremely long period of time. I believe everything is interconnected.
I believe that something does not come from nothing nor does something turn into nothing. Everything that exists has always existed and will always exist. As conditions change things manifest in different ways. Matter and energy are one and the same. You cannot destroy energy, but you can transform it. As ice melts into water, water evaporates into vapor, and vapor condenses into rain, all things are constantly changing as conditions change.
I believe the past and the future are illusions created by the human brain. There is only the eternal now.
I believe the narrative story created by the human brain as a safety mechanism known as the ego is not our true Self. The true Self is consciousness. Consciousness is much like a radio signal being transmitted by the universe. Our bodies are like a radio that picks up that signal and manifests it into a song. If you turn the radio off, if you unplug the radio, if you disassemble the radio, the signal is still there and ever present.
I believe the human brain is wired for religion. Anything that requires faith is a religion. To say, "I do not believe in gods or the supernatural because I believe one day science will provide a perfectly rational reason for everything" is to have faith in science. Science is just another spiritual practice. It is a great spiritual practice. The mark of a truly great spiritual practice is one that first requires faith and second requires doubts, rationality, and proof through personal experience.