There is a simple way to become buddha: When you refrain from unwholesome actions, are not attached to birth and death, and are compassionate toward all sentient beings, respectful to seniors and kind to juniors, not excluding or desiring anything, with no designing thoughts or worries, you will be called a buddha. Do not seek anything else.
Refraining from all evil, not clinging to birth and death, working in deep compassion for all sentient beings, respecting those over you and pitying those below you, without any detesting or desiring, worrying or lamentation - this is what is called Buddha. Do not search beyond it.