Our hardest, and most painful lessons in life are generally the ones that change us most completely, and can remake us at a very basic level. It is easy to teach someone how to do a certain thing, like to make up their bed when they get out of it, or brush their teeth each day, but to teach them to be a different person... not be afraid of heights, or to love God more intensely, requires a much deeper experience, and that often involves suffering, and affliction.