Sweet Mother, what does "an exclusive self- opening to the Divine Power" mean?
Instead of self-opening we could put receptivity, something that opens in order to receive. Now, instead of opening and receiving from all sides and from everyone, as is usually done, one opens only to the Divine to receive only the Divine Force. It is the very opposite of what men usually do. They are always open on the surface, they receive all the influences from all sides. And then this produces inside them what we might call a pot-pourri {Mother laughs} of all kinds of contradictory movements which naturally create countless difficulties. So here, you are advised to open only to the Divine and to receive only the Divine Force to the exclusion of everything else. This diminishes all difficulties almost entirely.