Self-conditioning, contemplation and self-examination are essential pre-requisites for a seeker (mujahid) of truth who is battling with his self. Self-conditioning or stipulation means binding oneself with the resolve not to do anything against God’s commands.
This is called musharatah, such as ‘I will not violate the Law of God today.’ It is very easy to stick to such condition for one day. Try to resolve, abide by your own resolve, and experiment, and you will see that how easy this task is.