To be a good politician is very hard

I will need to fight against the interest of some groups, very powerful and tough guys.
It requires to be clever and apply the right principles.

Self discipline is to get rid of selfish.
Discipline is very essential.
Western is better in discipline which means they are less selfish.

I must be a disciplined person. Never go late, clean clothes and good manner.

Fight against bad interest. It is tough.