Here is one paragraph taken from the book The Zahir By Paulo Coelho:

“The ACOMODADOR or giving up point: there is always an event in our lives that is responsible for us failing to progress, a trauma, a particularly bitter defeat, a disappointment in love, even a victory that we did not quite understand, can make cowards of us and prevent us from moving on. As part of the process of increasing his hidden powers, The shaman must first free himself from that giving up point and, to do so, he must review his whole life and find out where it occured. “