The digital marketer usually focuses on a different key performance indicator (KPI) for each channel so they can properly measure the company's performance across each one. A digital marketer who's in charge of SEO, for example, measures their website's "organic traffic" -- of that traffic coming from website visitors who found a page of the business's website via a Google search.
Decide if marketing is a career fit for you. Consider taking a personality test, which will reveal your preferences. A test similar to the popular Myers-Briggs test can be found at 16personalities, and there are many others. This test will reveal your work preferences. See how of your preferences match the skills needed to be an Internet marketer.