There should be a strong connection between your conclusion and your introduction. All the themes and issues that you raised in your introduction must be referred to again in one way or another. If you find out at this stage that your thesis has not tackled an issue that you raised in the introduction, you should go back to the introduction and delete the reference to that issue. An elegant way to structure the text is to use the same textual figure or case in the beginning as well as in the end. When the figure returns in the final section, it will have taken on a new and richer meaning through the insights you have encountered, created in the process of writing.
Dweck: For the most part, self-esteem is not something teachers can hand to students. Many teachers believe that if they praise students' intelligence, they can give their students high self-esteem. My work shows this is not true. I certainly think it is important for teachers to show students respect and give them a sense they are cared for, but apart from that, the best thing teachers can do for students is to put them in charge of their own self-esteem. This is by teaching students how to love challenges and learning and how to cope with and capitalize on setbacks.