I am an avid reader. I been an avid reader since I learned how to read. And while I try to review the books I read if I did that I would never get any writing done for me.
Reading different genres from different authors can get the juices flowing and the excitement stirring to get to work on my latest WIP. Watching movies is another way. Especially the ones that you fall in love with and then you find out it is from a book. That just makes me want to read it to see if they got it right or if they just used the skeleton version of it.
Listening to other people and their projects when they read parts of it in a group can make one excited not just for themselves but for you as well. If you share pieces with a group the feedback can be rewarding and bridge you to the next step. If one attends conferences or are on online forums dedicated to the craft of writing. There you see or feel the buzz that happens when people of the same mind interact with each other.
Perhaps have a notebook for ideas of short stories or novels. If you ever get writer’s block or feel a need to take a break from one WIP you can work on another. The book I use for ideas has way too many ideas. I would have to live very long to get to use them and that is if I even stop adding to the list.
No matter where you get it from if it helps you to write and get passionate about the topic that is what matters.