HSP

Highly Sensitive People will take longer to make decisions, need more time alone to think, and are generally more conscientious. Anxiety is a big component of the HSP's experience. They suffer from what is called sensory - processing sensitivity and are more susceptible than ordinary people to both internal and external stimuli. They experience other people's emotions and they have an innate tendency to process things more carefully. They tend to be aware of subtleties and are therefore easily overwhelmed by their feelings. 

HSPs are not just people who get their feelings hurt easily. Part of the condition is having a complex inner life and an active imagination.

And given how beautifully they describe the pain that comes with feeling so intensely, creativity comes to them quite naturally.