Gita17.16

The images of prosperous people that make us burn with envy are just our mind’s illusions Gita 17 16

Even if we are feeling miserable, that doesn’t give us the right to make others miserable Gita 17 16

How is simplicity as an austerity of the body in Gita 17.14 different from simplicity as an austerity of the mind in Gita 17.16?