Casting is not just a responsibility, it is a way of life.
Casting, it speaks to us in such a way as its hard to find the word to describe. A long forgotten message of the subconscious mind and it's inner workings with our known universal stimulus.
Casting is powerful and can potentially become volatile based on your emotions and personal grounding or level of intent and concentration. So it is the responsibility of the caster to find within himself/herself, peace and tranquility as to not have a backfire, or misgotten thought arise in the time of the cast.
To cast is to make firm the transient property that occurs within the realm of thought, it is to bring into motion the personification of ones own will. Without the proper level of practice or knowledge, it can turn against you.
Casting is an expression of the self, we cast out words daily without any thought of what we are truly saying, even the curse word has a sharp undertone on the "casters" psyche, and as well to those around them at the time.
But when free of thought and fluid with the natural motions of energy, given power to the expression becomes cherishable and potentially charitable to those around you.
But be aware of what actions you are really taking, what purpose they may have. To learn from past mistakes and make better the self, with others in mind.
Then your self expression (castings), will have a more divine purpose, as they flow along side the order of things and not against the grain. And as such, will they reflect upon your life in a multitude of ways, positively.