Essays / Common app personal essay: selecting a topic for significant experience [8]

Significant experience or accomplishment ; Need ideas as how to begin!

Are there any significant experiences you have had, or accomplishments you have realized,that have helped you as a person?

Please give me some ideas how to begin and end this essay question.
What I should not write & what i should write.
what answer and point of views are you going to look for the answer?