In the first place some should've never begun. It is easy to destroy than to build one. A domain that worst things can creep in. A cure and also a poison from within.
At the core, there is no room for selfishness; Just unconditional commitment, -nothing more and nothing less, In some degree, it can be bounded by unhealthy desire. But to endure pain for the sake of it, is baptism by fire.
It takes cues from our senses. It is more than everything we see. But one thing is for certain, in this domain, there is always you and me.