Topics: How do I deal with this co-worker and this situation?
Cullen was born in West Orange, New Jersey , and was the youngest of eight children. His father, a bus driver, was 58 years old at the time of Charles' birth and died when Cullen was seven months old. Cullen described his childhood as miserable. He first attempted suicide at age nine by drinking chemicals from a chemistry set. This would be the first of many suicide attempts throughout his life. Later, working as a nurse, Cullen claimed to have fantasized about stealing drugs from the hospital where he worked and using them to end his life.
That same month, Cullen enrolled at the Mountainside Hospital School of Nursing in Montclair, New Jersey , where he was the only male student. Cullen was later elected president of his nursing class. He graduated in 1987 and took a job at the burn unit of St. Barnabas Medical Center in Livingston, New Jersey. 
In March 1993, Cullen broke into a co-worker's home while she and her young son slept, but left without waking them. Cullen then began stalking the woman, who filed a police report against him. Cullen subsequently pleaded guilty to trespassing and received one year's probation. The day after his arrest, Cullen attempted suicide again. He took two months off work and was treated for depression in two psychiatric facilities, but attempted suicide twice more before the end of 1993, at which point he quit his job at Warren Hospital.