How holding grudges affects happiness and how accepting and forgiving can positively impact someone

Teachers instruction: Your assignment is to write a 1,000-word informative research paper over one of the variables that has been show to be correlated with increasing happiness.  These include but aren’t limited to exercise, meditation, gratitude, relationships, nutrition, and nature.    You will need to use three scholarly articles in the development of this paper and you need to document them using the MLA style.
Process
1)  Build your foundational knowledge about happiness research by viewing Happiness 101 by Tal Ben-Shahar on youtube and reading “The Brain on Nature.”  Participate in class discussions.
2)  Do some reading on the variable that you select and locate at least three articles that will assist you in discussing the relationship between the variable and happiness.
Organization
In the introduction, provide some general information about research come from positive psychology and the science of happiness.  Lead into background information about the variable you are writing about in the paper and then conclude the 200-word intro with a thesis statement.
In the 600-word body, have two to four major sections of thought in which you provide evidence that supports the relationship between the variable and happiness.
In the 200-word conclusion, draw conclusions based on everything that you’ve presented and offer some recommendations.
Document the paper using the MLA style with in text citations and a works cited page.

I want the paper to be about how holding grudges negativity impacts us in the long run and how releasing those grudges can free the mind and bring happiness. I want the intro to include a personal story about forgiving someone and feeling weight lifted off of me, like when i forgave my mother for not nurturing me and creating an emotional relationship with me. I didn’t receive the affection and support i needed from my mother and that created depression, anger, confusion and limits to the level of happiness i could reach before that trauma attacked me again and took away the bit of light i had. My teacher said the thesis should be one sentence with three points that factor into the subject so maybe how holding grudges cause anger, depression, and suicidal tendencies.