Various protist species are important to humans because they are the primary producers at the base of the food pyramid, turning the energy from the sun into a form that can be passed from organism to organism up the food pyramid.
A simple definition for inner success is inner peace. This is when you are truly at peace with your human existence in that nothing external to you can take away this peace. A more comprehensive definition of inner success is true happiness unconditioned by anything outside of you. Inner success is maintaining optimism, appreciation, and abundance in the present moment. Inner success is having a sense of completeness, certainty, and faith that everything is okay. Inner success is having compassion, forgiveness, and unconditional love in every moment. And last to mention, inner success is the connection to your true self, to God, and to the Creation and Universe around. What are external factors to success? There are determinant factors in life-those things you cannot control; and there is freewill, those things you can control.
Failing is an essential part of the path. When we have spiritual success our ego grows side by side, when we fail, it is diminished and is ground down. The Enlightenment experience is the end of the search but surely the beginning of the path. (Or as I often say, the search moves from the horizontal to the vertical dimension) Often it takes the loss of that experience, for us to be truly committed to the discipline of the spiritual life.