这是一个主系表结构的复合句.该复合句的主语是（The most striking） feature,表语是一个 that 从句 ,这个从句的内容是unbelievably,it is like him that alost everyone of us feels tired or even exhausted,该从句与前文中的 that构成同位语从句.
而从句unbelievably,it is like him that alost everyone of us feels tired or even exhausted .中又包含着一个主语从句,其真正的主要是alost everyone of us,它由it指代,表语是feels tired or even exhausted