You may find yourself writing a scene you never intended to because your characters did not react the way you wanted them to. It does not matter that you are the author, your characters will do their own thing.
You’re the author, you can do anything! If you want your characters to sit on the edge of a volcano and have an ice cream eating contest, go ahead.
It is perfectly reasonable to read a few books ahead in a series, seeking spoilers. So long as those spoilers are due to fears for a dear character’s life.
A good book will take your mind to far away places. Then it will make you want to actually travel to those places. Next thing you know, you have 5 holidays planned with neither the time nor money to fund them.
Sleeping with a notebook nearby is a great for jotting down late night ideas. Until you check it the next morning and find your drowsy, in the dark handwriting to be nearly illegible.
Songs can help your creativity flow. Songs can also result in you dancing around the room and singing at the top of your lungs. Choose your songs wisely.
Writing a book is easy, until you realise that writing down words in any random order does not count.