今人有过,不喜人规,如护疾而忌医,宁灭其身而无悟也. 翻译

People nowadays do not accept other's advice when they have mistake, just as do not see a doctor when they are ill. They would rather desdroy themselves than aware of their current situation.
I hope I understand right and translate smoothly.

现在，人们有了过错缺失，就像护着自己的病症害怕去看医生一样，宁肯自己病死或身败名裂也不肯觉悟

现在的人们有了过错，却不喜欢别人帮忙纠正，就像护着自己的病症而害怕去看医生一样，宁肯自己病死或身败名裂也不觉悟。