In conceptualizing a theme, you have to consider the main question, "What would you like to say with your essay?" For example, do you want the admissions committee to understand your choice of major and career in relation to your family background, or do you want to share your passion for your chosen field and your desire to achieve excellence in it? Whichever theme you come up with, this has to be unique to you as an applicant and should be related to your personal background, choice of major, and choice of career. The more unique a theme is, the more interesting the essay will be. In this sense, you can capitalize on personal facts you believe are noteworthy of exposition.
The most convincing personal statements often consist of your academic records, accomplishments, and extra_curricular activities. It may also include any incredible circumstances, challenges, or adversities you have faced and the manner in which those bottlenecks have been overcome. There is nothing wrong in mentioning about your initiative, inspiration, headship, perseverance, and your ample experience in moving with other cultures. In short, all positive qualities or all achievements in light of the opportunities available to you can be mentioned.