In Chaos Magic, beliefs are not seen as ends in themselves, but as tools for creating desired effects. To fully realize this is to face a terrible freedom in which Nothing is True and Everything is Permitted, which is to say that everything is possible, there are no certainties, and the consequences can be ghastly. Laughter seems to be the only defence against the realisation that one does not even have a real self.
The purpose of Chaos Rituals is to create beliefs by acting as though such beliefs were true. In Chaos Rituals you Fake it till you Make it, to obtain the power that a belief can provide. Afterwards, if you have any sense, you will laugh it off, and seek the requisite beliefs for whatever you want to do next, as Chaos moves you.
Thus Chaoism proclaims the Death and Rebirth of the Gods. Our subconscious creativity and parapsychological powers are more than adequate to create or destroy any god or self or demon or other "spritual" entity that we may choose to invest or disinvest belief in, at least for ourselves and sometimes others as well. The frequently awesome results attaining by creating gods by act of ritually behaving as though they exist should not lead the Chaos magician into the abyss of attributing ultimate reality to anything.