If you're tempted to give it a go, then go for it. I'd advise you to think ahead, though. If you just write one book, you can expect it to swim and then drift downwards. I did originally think standalone before I started. My research quickly put that notiob to rest. I had to start with a series. I wrote my first three before even marketing which worked really well. (If you see my OP you can look at my stuff)

I highly recommend you read two books right now. One is this (essential): https://www.amazon.com/Publish-Repeat-No-Luck-Required-Self-Publishing-Success-ebook/dp/B00H26IFJS/ref=sr_1_1?ie=UTF8&qid=1484083927&sr=8-1&keywords=write+publish+repeat

And here's the other one - it's technically for screenwriting, but the tips in there apply to books (essential for helping you write and think about your stories): https://www.amazon.com/Story-Substance-Structure-Principles-Screenwriting/dp/0060391685/ref=sr_1_1?ie=UTF8&qid=1484083965&sr=8-1&keywords=mckee+story

Hope this helps! Am happy to help you along the way, hit me up on FaceBook if you like.