Self-Denial: Danger of Neglecting

For whoever wants to save his life will lose it, but whoever loses his life for My sake will find it.

What will it profit a man if he gains the whole world, yet forfeits his soul? Or what can a man give in exchange for his soul?

No, I discipline my body and make it my slave, so that after I have preached to others, I myself will not be disqualified.