Ironically, what you despise the most will probably do a better job of locating something within you that you can turn into something useful than what you love.
I don't love graphic design, I hate nonsensical jargon, and the barriers that poor communication creates around good information.
There is more opportunity in identifying what you hate than what you love.
If you love it, chances are, others do — and if you hate it, chances are, others do.
If everyone loves it = huge competition.
If everyone hates it = huge opportunity.
Another real example, I just hired @tomosman because I hate the state of the back-end of our business.
I don't think Tom woke up one day and decided he was passionate about 45 part software automations, more likely he got frustrated and learned how to fix the problem himself.
A Circle of Competence is the set of topic areas that align with a person's expertise.
If the entire world of information were to be expressed in a circle, an individual's Circle of Competence is the small sub-circle that represents their expertise.
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The idea surfaced in the 1996 BH annual letter.
"You don’t have to be an expert on every company...you only have to be able to evaluate companies within your circle of competence. The size of that circle is not very important; knowing its boundaries, however, is vital."