I am new to the field and want to focus on acquiring the skills that will be the most valuable to businesses.
I echo the answers already given - but add that the skills in most short supply today are an understanding of data and analytics and how to tie these into the customer journey.
Educate yourself using Avinask Kaushik's blog and newsletter. He wrote this blog post and it's invaluable as a starter primer for the topic of content marketing measurement framework.
https://www.kaushik.net/avinash/see-think-do-content-marketing-measurement-business-framework/