Right, thats why I have such trouble with it, I have never woken up in the morning and wanted to do it but I have to force myself into it, because I'm on a mission, to beable to do it in the middle of the day on command, but other then that I want to explore my mind a bit.
I do beleive very few people could master this, just because it is so dependant on such huge amounts of motivation and persistence, you may not understand me, but once you try it at 5am in the morning you will know, I usualy only try like 1/3 percent of the time, and when I do try I only really put effort into it about 1/5 times, and I've never succeded yet, been trying for months on end, but I never managed to take a very shot at it, I push myself to try more at it, but it doesn't work much of the time.
The recuirment of persistance is probably do to the effort needed to visualize, were as normal wilds don't have that.