关于信心的英语谚语，综合权威资料整理如下：

一、核心信念类

1. "Believe in yourself. You are never too old to set another goal or to dream a new dream."（相信自己。你永远不老，可以设定新目标或追逐新梦想）

2. "Natural talent is only a starting point. It's the hard work and belief that turn it into success."（天赋仅是起点，努力和信念才能将其转化为成功）

二、行动激励类

1. "Confidence is the first key to success. Without it, you can't unlock the door to achievement."（信心是成功的第一把钥匙）

2. "All things are difficult before they are easy. The belief in oneself makes the impossible seem possible."（事难必先易，信念让不可能变为可能）

三、品质升华类

1. "Self-confidence and self-reliance are the pillars of strength."（自信与自立是坚强的支柱）

2. "The triumph of a person is not measured by what they achieve, but by the confidence they carry."（一个人的成就不在于结果，而在于他们拥有的信念）

四、实践价值类

1. "Labor builds confidence, and confidence breeds labor."（劳动建立自信，自信激发劳动）

2. "The only way to do great work is to love what you do. Confidence comes from passion."（做好工作的唯一方法是热爱你的事业，自信源于热情）

这些谚语从不同角度诠释了信心的内涵，既强调内在信念的力量，也注重通过行动和努力将信念转化为现实。建议在激励演讲、个人成长记录或困境鼓励场景中使用，可配合具体事例增强感染力。