The Eight of Pentacles in a reading indicates that you are working hard to hone your skills in a specific field or endeavor. You may be getting a new degree, learning a new skill, or starting a new career path. It takes focus and dedication to hone your craft, but your hard work will pay off in the end.
In the picture, you can see that this young man has gone some distance away from his village so that he can focus all of his attention on the task at hand. In a similar way, perhaps you have removed yourself from distractions so that you can focus all of your energy on learning your new skill.
Perhaps you are undertaking a new business venture, engaging in self improvement, becoming an entrepreneur, or getting a new degree. Whatever the case, your focus at this time seems single minded to others, however this is what needs to be done at the present time. Attempt to remove distractions as much as possible so you can focus on what you need to do.
They say to learn a new skill and become a master, it takes 10,000 of concentrated practice. This is what you are doing now. You are applying yourself so that you can become a master of what you do. This may seem like a lot of practice, but be assured, it will help you achieve what you want with time.
I hope this reading proves helpful for you, please feel free to leave a comment with any questions!