A person who seeks to overcome his nature should set himself tasks which are neither too easy not nor difficult. Let him graduate from the easy to the more difficult. He should begin with external aids and go on with resolution to face situation which are more difficult than those he would usually face a man gains perfection, in this manner. When natural disposition is very strong, the process of subduing it must necessarily be slow and laborious. It is commendable if a man has the strength of mind and resolution to curb a disposition instantly and completely. Another good method to change one's disposition is to practise the opposite characteristic, provided, of course, it is not a vice.