103 - Skill is your ability to do something well. Being an effective worker in life often depends on your ability to execute on a skillset.
You can get ahead in life with your skill sets through two main paths. The first is to become the best in a common skill such that people seek out your services (e.g. best guitarist, amazing writer, etc). The second is to pick a skill set that is a unique combination and involves an important but niche knowledge base. Where you are able to provide a skill that very few people can provide (Newport, 2016).
See also Dreyfus Model of Skill Acquistion.
Not only do skills require the knowledge of how to carry out a task but also the background knowledge that supports them.