Well, if you have good traffic for your blog without much backlinks, it is certainly good and one of the reasons for this would be the fact that the content of your website is unique and is searched quite often on the internet.
If you have unique content on your website, it does not mean that you will get backlinks automatically and you do not have to do much offpage optimization for getting backlinks. If the content of your website is good, it will make it easier for you to get backlinks, however, it is important to work for the offpage optimization of the website.
Hence, I would suggest you to start with the offpage optimization for your website which will help you to get more backlinks which will affect the
PR as well as traffic for your website
