My friend recently spoke to me about fear. It's healthy to be fearful of any new adventure that may have an uncertain outcome. She said, psychedelics always have some chance of going somewhere unexpected, and if they didn't, she wouldn't be so intrigued by them. Judging a good set and setting isn't a perfect science either since both external and internal factors are subject to change and/or mis-judgment. The fact that psychedelics are used so often by so many says that most of the time, people get it right, but there is no perfect security, only opportunity.
She mentioned another interesting thing about the spice that others on Nexus have also pointed out. A non-breakthrough dose is not so pleasant for her and causes feelings of anxiety. A solid breakthrough seems to cause a warming sense of wellbeing that smothers the fear. This is a little bit of a paradox. She fears the spice and yet she must 'jump all the way in' to insure that the fear doesn't get amplified due to low dose anxiety.
Part of her fear problem seems to be solved. After acquiring a GVG and torch, launches are now very reliable. Even controling the flight altitude is possible as never before. At some point, she is certain some kind of difficulty might arise, but for now she says,"Hell yeah! Removing sources of launch failure eliminated some of the uncertainty and also, some of the fear." She is a GVG convert.