Psychologically, we are made of very tough stuff – the mental equivalent of Titanium! As a consequence, it is extremely difficult to knock off our rough edges. It takes a painfully long time, and many abrasive experiences.
However, when those rough edges finally have been smoothed off, we will find it easy to slip into the next life with no catching, complaint or resistance. It will come as naturally as the progression from caterpillar to butterfly, as consciousness graduates from one level of experience into a higher one.