I will write only a passage because I have a very long essay on this topic. I wrote that I was constantly developing and learning more and more new things and memorizing as much as possible so that I could use this knowledge in science and share it with people. If you are interested in reading an essay or research paper, then here is my link.
https://samedaypapers.com/blog/how-to-write-research-paper-outline
I wrote my first mission statement when I was in 6th grade my teacher helps me to write it. She told me to always remember that these following topics should cover your personal mission statement.
-Education
-Sports
-Community service
-Career
-How you want to live your life
-Personal attributes, such as honesty, loyalty and dedication
-Family and personal relationships
-Faith and spirituality
I also get help from the following site to write my personal mission statement.