THE 38 WAYS TO HAPPINESS: Do not associate with fools II
Everyone born into the world has the greatest of intentions to live a decent life no-one wants to make a mess of their lives. Even a criminal doesn't particularly want to live his life dishonestly, but he thinks that being a criminal is good enough it's a good shortcut in earning one's living thus why not be a criminal. Having become a criminal. it is only later that he finds out that being a criminal is no good, but by then it's too late he can't change his mind or his life and ends up being a criminal for the rest of his life. Thus you can conclude that although everyone would like to be good, not everyone manages to live out their wishes.
Dhammacakkappavattana Sutta
Dhammacakkappavattana Sutta (บทธัมมจักกัปปวัตตนสูตร ภาษาอังกฤษ)