Complex sentence: Life stressors are often described as negative events (loss of a job); however, positive changes in life (a new job) can also constitute life stressors, thus requiring the use of coping skills to adapt.
Split into simpler sentences: Life stressors are often described as negative events (loss of a job). However, positive changes in life (a new job) can also constitute life stressors, thus requiring the use of coping skills to adapt.