SHAFAQNA – The seeker of the truth should know that self-control/self-discipline is the same as being religious. It is narrated from Imam Ali (AS) who said: The religion of Islam and its laws/decrees can lead to purification of soul [1]. The biggest and most important task we have in this world is that we are able to purify ourselves properly [1].
[1] Tebyan Website, Nokate Akhlaqi as Allamah Tabatabaei (18/06/2015).