Answer:
You need an open mind and to focuse all your energy on your spell and your spell's purpose.
A Pagan Perspective
Witchcraft is above all a spiritual path.
Like most things in this world, it takes years of training and practice to become proficient. Finding a skilled, ethical teacher is a first step on your path.
I advise you to look for someone you know, or can get to know personally, much too much of what we do is not something one can pick up by reading a book, watching a You-tube video or grabbing something off the internet.
Witchcraft is not "fast food", nor is it a game or pastime for the silly or those unwilling to dedicate time and effort to it.