INFJ's are creative people who live mostly in their heads.
Their intuition is constantly in overdrive, and this can be exhausting for them.
Ideas, thoughts and emotions live as abstract in INFJ's and is why they are often drawn to create the abstract. Thinking abstractly however, can cause complications when voiced both through their art, and in communication with others, resulting in being mostly misunderstood.
Even so, they need to express themselves through various forms of art and are constantly thinking of new ideas.
Their mind is hard to turn off. and many INFJ's do not sleep well.