I take it as a given that ones ordinary consciousness conceived of as a self continues to have the problems associated with being a self. One can get rid of the self by meditating or dropping acid, but eventually we return. Therefore, it makes sense to return with some solutions/relief, not just come down to a state dissociated from where we've been.
I further take it as a given that the ordinary self is multiple--a collection of partially dissociated selves, mostly sharing memory but often unaware that the other selves are not quite the same "me." We use the term "integration" to refer to the process wherein different selves become less at odds with one another and cooperate as a single self. The alternative to integration is internal conflict--fighting with oneself. The ability to resolve these fights in a peaceful, i.e. loving, way is how we integrate.
I conclude that the injunction not to fight the acid (given to trippers having a hard time) is really in error. The fighting is necessary--a manifestation of pre-existing internal conflict. The alternative, is not really not fighting but submission which always leads to resentful resumption of hostilities later. What you really want to do is to resolve the conflicts as much as possible by having them out in the open.