Competitive strategy is about being different. It means deliberately choosing a different set of activities to deliver a unique mix of value.

Optimism is a learned skill. Once you learn it, you can improve your life in every way.

如果要从正确和善良中，作出选择，请选择善良.

解释：要量力而行，实力达得到就进攻，达不到就撤退。