Have a specific purpose
This really helps in getting hits and views. This blog is mostly for my relaxation and because I like writing but if you are going to be serious, you'd probably need to figure out a particular purpose and stick to it. I've had a number of blogs over the years and in my experience having a singular purpose in a blog makes a different. So my most successful blog to date was blogging about reality shows when I used to watch them but I stopped when I found them boring. That blog was about popular culture and my hits used to average about 1000 a day, for lesser shows in was in the hundreds, on this site a good post will get about ten hits others just about two or three.
This blog is generally just me doing my thing, for myself and my writing. The review blog was me sharing my opinion about shows which other people watched. I think informational and opinion blogs do very well so blogs like fashion, TV, gaming, politics, travel, hobbies, advice, cooking, baking etc.
Be consistent and keep up-dated
Generally it helps that blogs are kept up to date. I'm a hobbyist blogger so I do it when I have time. When I was watching the series, I would blog according to the seasons but being a non-professional it sort of petered off. I tend to get bored.
Blog about things you actually like
Generally this is what makes a blogger long term. Some people say blog what you are passionate about but I'll just dial back and say what you are actually interested in, and don't mind sharing. It also allows you to slowly build an audience and keep going. Generally I like practical thing but don't do them a lot so it doesn't really make sense for me to tie myself down to one thing. I love talking about books, but as a writer, I think it may be unfair to influence readers unless I have something positive to say - and I leave that to the book bloggers.
These are the three things I've learnt, having a purpose for the blog, being consistent and blogging about things I like.