The good is that which stems from the supreme first principle of love. Once you have a strong intuition for what love is you can become part of the good and an agent in its resurrection.
Good and evil both evolve in our neurology and our cultures. Thus the first battle is firstly an internal one to become a real hero. The second battle is to alter the social ether to help others win their battles too. Evolve yourself. Then evolve culture to help others. We win or lose together.
Once love is accepted as the first supreme principle then one can see morality only appears as an art because the science of the philosophical tree can only be navigated by the heart.
The good is not a maze to the good hearted yet is only that to those cold within.
The good will thrive in any environment that favours altruism.