Final answer:
Michael Jackson's life was shaped by an accident and a serious illness, which had significant impacts on his personality and artistic expression.
Step-by-step explanation:
Michael Jackson underwent several changes in his life that shaped him into the person we know today. One significant change was the accident he had, which caused physical and emotional effects. Friends described him as becoming irritable, temperamental, and lazy after the accident. Another change in his life was the diagnosis of a serious illness, which made him reflect on his mortality and appreciate the time he had left. These experiences likely influenced his attitudes, behavior, and artistic expression, leading to the transformation we see in the person he became.