I think the trip is neccessary. I've only done psychedelics a handful of times, but they have been very helpful. I think the challenges you experience are important because you are forced to overcome whatever issue it is, and that ability translates to real life, at least in my experience. I am sure this is common, but one of the first paranoid thoughts I had was, "what if I am stuck like this." In the tripping state I was able to accept that if it were so, I would just have to figure it out. I think accepting that you don't have control of a situation allows you to find what you do have control over.
As Hunter S Thompson said, "Buy the ticket, take the ride.