“I was born in 19XX year, I entered school N…” Would you read that if you had a choice? Most likely not, especially if you already have read a dozen biographies which star with the same phrase. Yes, an autobiography is a formal piece of writing. But here, it rather means that you are not allowed to use slang and colloquial language, instead of following a specific pattern of writing.
There is a good chance that if you haven’t had to write a bio already, that you may have to in the future. A bio is required of many job applicants, it is used on many networking sites, freelancers have to have one for potential clients and if you have a website or blog connected to your business, you should probably have one. Bios provide a concise summary of who a person is and what they do, while at the same time, they allow a bit of personality to come through. There are basically two main functions your bio should perform: 1) establish your credentials and qualifications; 2) create enough interest so the reader will want to know more.
If your writing is atrocious, or if you just need some help getting your thoughts in order, consider hiring a ghostwriter or a professional personal historian. Celebrities do it all the time. There is also a software that allows you to type your answers into a template on your computer, thus solving the problem of less-than-perfect handwriting. Many people also choose to type directly into an online template.