I know it's easy to forget sometimes that each aspect of personality type is not standalone, it is merely a preference. Everybody uses both sides of each dichotomy, we must, otherwise we couldn't function reasonably normally. Thinking and Feeling, or any of the others, are not opposites in the true sense of the word, each individual simply has a preference towards one or the other.
Taken from a book:
Thinking and Feeling describe the very different ways people make decisions, or come to conclusions. Clearly, each of us has the ability to make a decision based on logic or on our personal feelings and values. And, while no one is a pure Thinker or Feeler, each of us has a natural inborn preference for one side over the other.
Here again, the everyday usage of these words may give you an inaccurate impression of their true meaning. It's important to understand that Thinking and Feeling both describe rational decision-making processes. It's not that Thinkers have no feelings, or that Feelers are incapable of logic. But Thinkers and Feelers use very different criteria to make their decisions.
What T/F really describes is the process. Thinkers tend to
objectify any decision, they step back and analyze logically and impersonally. Feelers tend to
personalize the situation, taking a step forward and injection themselves into the equation. This can/will, of course, happen to different degrees depending on the individual, the situation and the decision.