Two things I feel are important:
1) Putting yourself out there - Authors complain and are reluctant to tweet, Facebook, blog, etc, but if you want to gain name recognition, it's almost a requirement. I have a regular blog each Tuesday (Two-Minute tips, see below for the book based on those tips that is available for pre-order...at only 99 cents :)), and I blog every other Friday about Elvis. I also post random blogs from other authors and feature a monthly post listing free ebooks and one listing 99 cent ebooks. As a result, my blog has quite a few followers. And, you know what I've found? I actually enjoy blogging, whether it's on my own blog, or as a guest on others. My AHA group regularly tweets and Facebooks for one another. While it might not lead to a ton of sales, it increases our following and who knows when one little thing is going to click into place and open the door for huge sales.
2) Keep writing - The more books you put out, the bigger your catalog is, the more likely you are to increase your sales. I say write what you love to write, but it's also not a bad idea to pay attention to trends and maybe try something else, as long as you can quickly put a book out. The problem with writing to trends is that by the time your book is out, the trend could be over. One thing I've noticed is that my gothic mystery romance, Lady in the Mist, sells better than my other books and even though it's been out since 2012, the sales remain pretty consistent. Who knew that would be a popular genre?
What about you? Have you discovered something that has helped your book sales, helped your exposure?
RUINED is free on Amazon Kindle through Monday:
Pre-Order for 99 Cents: