constant effort yields sure success
大多数的标准翻译.
翻译的比较中国风一些是：
there'll be absolutely a way to be the King of Kungfu u got if u just work hard to determine to be a awe somebody.
说“功夫”比较酷,英语可以体现出不仅是武功的“功夫”,泛指厉害的技能,somebody,厉害的家伙.