How should one best go about selecting a career that suites their personality,

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How should one best go about selecting a career that suites their personality, values, current realities? Is it best to go with intuitive "gut" urges or try to do as much research as possible on certain careers? If the latter, how much research would be enough before simply diving into a career. I guess my question is this: a making a career choice matter of faith, methodical research and thinking, both, or something else? -T.R.S