Jerry Low, WHSR’s founder and web guru, recommends keeping a good reference list of blogs that are related to your industry. He also recommends following Google+ profiles of experts in your area. He also recommends that when you come across an interesting title, save it, even if you don’t have time to read it right then. Occasionally, a title itself will spark an idea for you. If you use Evernote, then Evernote Web Clipper is a good tool to use for clipping articles and saving them for future reference. If you read print magazines, you can pull out pages and put them in a folder to sift through when you need an idea or two.
When you first start to blog, coming up with content consistently seems impossible.
Relax. Your blogging muscles will grow. Your blog makes everything you do more effective, so relax, and blog. :-)