You asked an excellent question! One I have asked people in the past few years. I don't believe in organized religion. I don't claim what I believe is "the right religion or belief system".
My beliefs include: respect life and nature. Violence has only one purpose, self-defense. Emotions like hate and revenge are a part of it. They should be used to push yourself harder and farther in life and as a person. "Evil can be used for good and good for evil." Life and the universe are a balance between opposing forces, constantly at war but needing each other to survive. I believe in a higher power, not one "god or goddess".
I do not believe that everyone should adopt what I believe. What works for me, might not work for someone else. I have formed these beliefs over 41 years. They have helped me through the worst times in my life.
I hope this answered your questions, even though it may be in contradiction.