The best answer for this question would be:
To achieve your dreams, you have to exercise, practice, and
make good choices.
In this big idea, the path to success leads to a lot of
practice and a lot of training from life experiences and even lessons from
different people, with that you can be able to make good choices.
The description that would improve the setting in the passage above best is "Eating dinner one chilly evening, my master and I...". Because it will set the mood of the retelling of his master's story.
Research can be tricky because you need to plan. You must know what your topic is and what your stance is on that topic. You can then create a chart that has your thesis statement in one box, and your topics in three different boxes thereby as you research, you can put the information you find in those boxes. For example: Let's say you are researching the effects of smoking. Your thesis statement would say something like: Smoking is harmful for your health because it can stunt your growth, cause cancer, and cost several hundred dollars a year.
Then as you research, you would note supporting details (facts) for how is 1. stunts your growth, 2. causes cancer, and 3. costs money.
So....you should keep notes about your topics for your body paragraphs.