Jeff is quite shy and has difficulty meeting new people, making friends, and getting involved in many social activities. the coreys would not suggest that

The answer is " he strive to become an extroverted personality since his shyness interferes so much with his life."

The vast majority trust that an extrovert is a man who is amicable and active. While that might be valid, that isn't the full importance of extroversion. An extrovert person is a man who is invigorated by being around other individuals. This is the inverse of a self observer who is invigorated by being distant from everyone else.