Keywords in Title Tags and Heading Tags

One of the best ways to get topic authority for specific keywords is to include them in the main title of your page as well as in heading tags (h2, h3, h4, etc.) within your text. 
The title (heading 1 tag) is one of the very first things the search engines look at to ascertain the topic of your page or post. Therefore, you want your title to include the search term you are going after in your text. You also want to avoid using heading 1 tags within your text as they can cause topic confusion.  
The use of heading 2, 3 and 4 tags that incorporate search terms are very good for organizing and breaking up blocks of text and will also give you more SEO topic authority than a bolded keyword.