英语翻译Now I know that I cannot pursue a worthy goal,steadily a

英语翻译
Now I know that I cannot pursue a worthy goal,steadily and persistently,with all the powers of my mind and yet fail.
正确的翻译是：
现在我知道，只要我一心一意向一个有价值的目标稳步前行，坚持不懈，就一定不会失败。
但是我怎么都理解不了。