Just out of curiosity, how did you first start practicing SEO? Did you just pick some other topic a lot of people where searching for, such as dog training for example, and then create a blog on that topic so you could practice getting that blog ranked higher? I would love to know your story of the initial strategy you used for practicing SEO, social media, etc. when you were first getting started learning it/them.
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.