Personal commitment should first clearly list the specific commitment content, including the behavior or attitude of commitment. Date refers to the date when the letter of commitment is signed, so as to determine the time point of commitment. Finally, a personal commitment letter should be signed to show the true will and sense of responsibility of the promisor. The signature can be handwritten or electronic. The format of personal commitment can be adjusted according to the specific situation, but the above elements are essential. This format can make the letter of commitment legally effective and remind the promisee of the importance of fulfilling the promise.