I'm very modest except when it comes to my intellect, which I will defend, but that is likely because of my skewed self-perception due to bullying and mental issues associated with genetic factors and mostly childhood traumas.
And I'm not tactful at all. I can't BE tactful even when I try. My Fe is a tube sock that fell behind the dryer, and I think it is too far gone to get back, even with the longest broom in the closet. As it is I'm incredibly blunt.