Is being INFP means weak-willed?

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For people who don't know about INFP, I'll mention about it briefly. INFPs are imaginative idealists, guided by their own core values and beliefs. They see potential for a better future, and pursue truth and meaning with their own individual flair. Typically unconventional, they often develop an offbeat personal style and enjoy expressing themselves with creative pursuits like writing or art. INFPs are sensitive, caring,and compassionate, and are deeply concerned with the personal growth of themselves and others. They will have a great deal of insight intopeople's characters. They will quickly and thoroughly understand where a person is coming from by assessing their motives and feelings. In this case, of why I asked this question is because I feel I can be bullied by my co-workers because I have INFP personality...I always been sensitive, full of dream, idealist and reserved around people while I actually interested in people and know a lot about people, but people who don't really know me usually misunderstand me. And actually I'm sick to be misunderstood and people taking me not seriously, but what can I do? Do I need to be more outspoken? Enjoy trivial conversation while actually I enjoy a deep conversation? Or need to change myself to be superficial? Or need to throw away my aloofness around people that I don't really know? As an INFP I just show my caring and loyalty to the people who close to me, but maybe people misunderstand me to be a selfish, aloof and don't care about my surrounding.