Participating in social media will boost your website traffic. Professional blogging is all about awareness, without social media, there is no awareness . Thus, raising your domain authority value. Practice participating in Facebook, Twitter, Google+, Pinterest etc. I would personally recommend Google+ because it may help in faster indexing of your pages as well.

Make your social business pages apart from personal profile pages. Add social widgets on your website to enable users to go on your social account directly. Social traffic is genuine traffic. Do not underestimate it. If you succeed making hands on to social media, domain authority will consistently improve.