Write what you know. We’ve all heard it.
I’ve always believed that meant every job I ever had would give more to write about. So the summers in vegetable packing plants and weeks going door-to-door collecting information for a local census were just writing research.
Any job you have is background to draw on.
That’s what Kathleen Rooney used when she wrote O, Democracy!, a novel based on time she spent working on an Illinois political campaign. Here are some others who worked unusual jobs, some of which they wrote about.

6 Famous Writers Who Worked Odd Jobs – Writer’s Circle
http://writerscircle.com/2013/09/odd-jobs-of-famous-authors.html

Elizabeth Law’s list is meant for people who write for children and young adults. I think it’s full of gems for any writer.

Ten Things That Make an Editor Stop Reading Your Manuscript — Elizabeth Law Reads

https://elizabeth-law.squarespace.com/blog/2014/7/15/finishing-the-hat-ten-things-that-make-an-editor-stop-reading-your-manuscript

In the last few years, I’ve gotten involved in a few writing groups. Each seems to serve a different purpose in my writing life.
If you’re going it alone, and finding it a struggle, you may want to create a group of your own. Here are three simple questions to start with.

The Benefit of Starting a Creative Circle – 99U
http://99u.com/workbook/27613/the-benefit-of-starting-a-creative-circle