Please explain "Mind over matter" mechanics...

Currently, damage is taken from ES before life. Mind over Matter inserts Mana into that sequence just before life, for 30% of the damage.
So any non chaos damage you take is subtracted from ES first. When you have no ES, 70% of the remainder goes to life, while the other 30% is diverted to mana. When you run out of mana, no damage can be taken from there, and all will go to life.

"

mavoop wrote:

I need to know this. Does the 30% less damage work with (for example) chaos degen? And damage to yourself through your own skills like Blood Rage?

No. It explicitly applies to damage you take when being hit. Degen doesn't hit you.

"

Sobeck wrote:

As far as i know those durations and chances are calculated from the damage dealt to a target compared to the LIFE of this target. MoM doesnt reduce the incomeing damage and doesnt increase the players life, so i guess i doesnt do anything against status ailment/stun?

Correct