Its okay to be more of a thinker than a feeler.
It can be hard being F because you can be so attached to people/situations, Feeling ppl need to practice rationality and Thinking people need to practice... compassion maybe? Not to say thinkers are not compassionate at all but just like feeling people need to practice disconnecting themselves from things thinkers could practice putting themselves in other peoples shoes. For example, really using your imagination and trying to see how it would be to live another person's life, then you would have a better idea of how they feel.
I think some thinkers could practice that more since they can sometimes be not-so-good at providing emotional support to the feeling people in their life and I think that would be the only place where being too thinking oriented could be a bad thing.