Everybody reacts differently to stressful and other situations in life. To understand why, psychologists have tried to define personality profiles. Persons with a Type D personality, characterized by negative thinking and low social interest, seem to be especially vulnerable to stress.
You don't have access to this post on Stressinsight at the moment, but if you upgrade your account you'll be able to see the whole thing, as well as all the other posts in the archive! Subscribing only takes a few seconds and will give you immediate access.