Do you “have a book in you?" The publishing industry is challenging. Not only do you have to be a great writer, but you need a big platform. In the end, you need a book that will sell. It's difficult to get published. That being said, it's still important for you to write! 

https://www.dashhouse.com/you-probably-wont-get-a-book-deal-we-still-need-you-to-write/ 

Write. Publish. Repeat. The No-Luck-Required Guide to Self-Publishing Success

Write. Publish. Repeat. by Sean Platt | Goodreads