The phrase no pain, no gain is a popular motivational phrase that is often used to encourage people to work hard, even when it is difficult. However, there is some debate about whether this phrase is actually accurate or helpful. On the one hand, it is true that some amount of pain and discomfort is often necessary in order to achieve one's goals. For example, athletes often have to train through pain in order to improve their performance. A No Pain No Gain Sticker.