For me this is something that has more of an application in buisness than in life in general. A good example is I recently started doing Affiliate Marketing. S

For me this is something that has more of an application in buisness than in life in general. A good example is I recently started doing Affiliate Marketing. Specifically I market webhosting products. I chose to do Affiliate Marketing and write about webhosting specifically because I already had a bunch of the core competencies. The way I think about it, to start an Affiliate Marketing site (at this point I'm using it purely as an example), I have to have several competencies including: - Knowledge of my Niche - Web development skills - Writing skills - Marketing / SEO While I am was not the best writer and knew little about SEO. I also knew I had a significant advantage over my competition because I already had a very good understanding of how to run a website and when learning SEO things came much easier because I could connect the technical dots that much faster. I would characterize my decision to start this business is based largely in the fact that a good chunk of the skills required were already in my circle of competence. So I would never want to base my entire life on this theory, it works well when you are trying to work on something new and maximize your chance of success.