Seems obvious, but just start blogging about anything that you know something about. Once you have the blog up and running you can get used to the discipline required and develop your own writing style. As an example, find it here you could start a blog about where you live. Just sign on with one of the free blogging services or purchase a domain name, install Wordpress or other blogging software and start blogging. Doing it this way means that all you have to come up with are observations about daily life in your town and write about them. It may not be riveting, but the point is that it gives you a source of material that you have to shape into something readable. This sort of blog may never get a large audience, but the fact that it is live adds a certain compulsion to write for it. If you were just writing for yourself without publishing it, there would be a greater chance of stopping through lack of motivation.
Write the way you think
For some people this may seem like a really bad idea, but the idea is to make your writing both unique and sustainable for you. If you try and copy someone else's style, you will not know how to express yourself within that style and you will end up as a very pale imitation of the writer you are trying to emulate. That's not something many people will go out of their way to read.
Always read before you post
I don't know how many times I have read a blog or article which has been marred by misspelling or the author copying and pasting a phrase twice and not editing the result properly. It is always possible to alter a post you have made, even after you have posted, but with Wordpress you can preview the page before actually publishing it. For some reason mistakes that you have not noticed in the editing window show up when you see the post in context, so always preview before posting and if you are as cautious as I am, read it again after posting. You will also notice problems with readability that you hadn't noticed before and can correct them to make the writing flow better.
Alter the size of the edit box
Finally a practical point. If you are using Wordpress, the default editor size is quite small and it is difficult to keep the sweep of the post as you have to scroll up and down to read it too much. Fortunately you can increase the number of lines by going to you Wordpress control panel and clicking on Options and then Writing and you can increase the size of the post box there. I find 20 is a reasonable line number, but you should may your own mind up on it.
Having a developed a style and become used to the discipline of blog writing, there are a number of ways you can make your blog more search engine friendly. This means that people can find it more easily, and I will cover this in future articles.
The wonderful thing about blogs today is they don't have to be boring and only include text content. You can get creative and include all kinds of content on your blog.
The more types of content that you include, the more interesting it will be for your audience. They'll want to read more, engage more, and even buy more when you have more creative content.
Video
You can easily create videos using your smartphone to educate your audience, or software on your computer record your screen to visually teach your audience how to do something or to go through a slide show. Video brings a brand-new element to your blog that is truly unsurpassed in opportunity.
Audio
Podcasts are super popular; people love downloading them and listening to them later in the day or when on the road. You can turn any blog post into a podcast by recording it using software already on your computer.
Infographics
An infographic is a pictorial depiction of data put together in an interesting way. Most infographics are fairly long and can include a lot of data. If you have any data-centric blog posts or informational articles, consider making them into an infographic.
Memes
Use beautiful imagery, quotes, facts and data to create pictorial images that are about 350x350 pixels depending on where you use them. You can put them on your blog, share them on social media, and more.
Guides
Longer blog posts that are very complete guides to something are very popular, and will increase the authority level of your website. These are very long blog posts with a lot of information links to other information on and off your website.
Reviews
Anytime you're not sure what type of content to put up, try doing a review. There are likely books within your niche, movies, educational programs, info products and more that you can easily do reviews about. Be honest, include images, and disclose how you came by the product you're reviewing.
Interviews and Webinars
Believe it or not, interviews, webinars and other recorded events can become content for you on your blog. Record, cut it into shorter versions, transcribe neutral Anchors it, make infographics to support it and you can create a lot of content out of one interview, webinar or hangout.
New Formats
When new formats come out for content, include them in your content mix. Mixing things up and making things look a little different will go far in keeping the interest of your audience.