Well, there is no reason to be scared. This is your mind we're talking about, and fortunately our minds are generally one of the few things we have the capability to take control of.
Understand that the MBTI is but a tool. It is not a real, physical, scientific theory on the grounds of, say, gravity, the area of a triangle, or evolution (shameless pro-evolution plug!)...nor does it have near the solidarity of other psychological theories, such as classical conditioning or that laissez-faire leaders usually have much less organized groups then democratic leaders.
MBTI is just a tool that is useful mainly for understanding people that think differently then you. It is also useful for predicting likely behaviors and tendencies in yourself and others. The worst thing people can do is define themselves by their MBTI type and refuse to change "because it wouldn't be me." To be happy people all we have to do is accept healthy, efficient ways of behaving and thinking (of which there are quite a variety, and so you get personalities), and to change unhealthy, inefficient ways of behaving and thinking.
So what I think is that you shouldn't sweat low scores. MBTI is not who you are...it's just a tool. I'd recommend redirecting your attention to the individual behaviors and ways of thinking that you tend toward, and resolve to participate in them if they're good, and change them if they're bad.
