write 550 words : write about psychological influences on pain perception.specifically discuss the gate control theory of pain by melzack and wall (1965),analyzing factors that can close the gate and factors that can close the gate,consider this in relation to the reading Tsai et al.(2018),on the positive effects of blogging about chronic pain and illness .discuss blogging in the context of psychological moderations such as stress,coping , social support,control and personality.