Positive Thinking

Everbody has a problem in his life. Some people have a problem in their family/ job etc. or they have a illness. Last week, my husband's mom went into the hospital for a brain operation. There was a a lot of patients who were older or younger and they had waited even longer for an operation. A lot of patient relatives were upset. This situation wasn't good for these patients. Truth is, disease is not good but we never don't shall think negative something (?????)  . According to İslam, people lose (taked of) their sins  when they have an accident or they have a sickness. Therefore we must always think good things. Because, a person who sees the good in things has good thoughts. And he who has good thoughts receives pleasure from life.