According to socionic theory, an INFP would struggle to utilize his inferior function, Extraverted Thinking. Exemplification of this function would be the definition of assertion: to put forth his rational and logical thoughts and transform it into a substance of action and control. With the leading function of introverted feeling, characterized by a withdrawn perspective of the world through emotions and passivity through the wish of creating harmony, it may be difficult for the INFP to assert himself and be a leader comfortably and naturally.
From my personal experience, my fears of failure or being wrong or leading ineffectively result in me choosing to be passive in roles of leadership. My obsession with my feelings justify my failure to create action and cripple me from growing out of this paradigm of passivity. It's a self-perpetuating cycle that can only be broken only with immense energy and the consciousness and desire to push oneself out of the mental paradigm. Of course, the degree of this cognitive difficulty varies among individuals and can be found in other personality types through their experience and parental role models that taught them passivity. However, let's be generalizing and assume being assertive and dominant is a difficulty for the INFPs. And by assertive and dominant, I don't mean loud and extroverted. I specifically mean to be in control and to lead, even if it's through actions rather than words.
Through this assumption, were there any INFPs that were able to change? If so, what are your thoughts.