If your website isn't Mobile-Friendly then starting April 21st your SEO ranking with Google will be affected. Google announced that they have begun to penalize websites that haven't been optimized to be viewed on a mobile device. Websites that aren't Mobile-Friendly contain text unreadable without zooming, content where the visitor needs to scroll horizontally, or links too close together where the correct link can't easily be tapped.
If your website isn't Mobile-Friendly there are ways to make it Mobile-Friendly without re-doing your entire website. Contact me to learn about the options that will make your site responsive and Mobile-Friendly and thereby increase your search engine optimization.