Many of us have the gift of writing. The idea of putting our thoughts into words comes natural to them. It is indeed a very good idea. Those of us who are very emotional and weak mentally can take good benefit from the art of writing. They could use it as an outlet to vent their feelings. There are many ways in which people use this trait of theirs. Some of them are not very serious about it and pursue writing as and when they feel like.
It is kind of a hobby for them. Your writing can take any form. It can either be conveyed as a simple journal entry in your personal diary or take the form of poetic words and convert into a poem. It all depends on the creativity of the individual. Writing as a hobby is not only very satisfying and relaxing but at the same time has the potential of becoming into a very good job. If you know it that you have it in you to word a good book then why not!
The category of writing could be any. It could be a novel, it could be an autobiography, it could be a children book or even a collection of short stories.
All of them fulfill the same aim and provide you the outlet that you seek. It is generally perceived that you need to fit into a certain type of people in order to write a book. This is again not true at all! There have been kids as young as 7-9 years who have showed love towards their hobby of writing and then went forward and wrote a book. Therefore do not limit your passion towards writing and its various forms like Creative talent. Cultivate this hobby and enjoy the process.