"No pain, no gain" is a common Engpsh saying that means that you have to put in effort and work hard in order to achieve success or make progress. This saying suggests that you have to be wilpng to make sacrifices and put in the time and effort to reach your goals, and that the rewards for your efforts will come later.

For example, you might say: "I know it's hard to study Engpsh every day, but remember that no pain, no gain. If you keep working at it, you will eventually see improvement and be able to communicate more effectively in Engpsh."

Another way to express this idea is to say "You have to put in the work before you can see the results." This means that you need to do the necessary tasks or put in the necessary effort in order to achieve your goals or see progress.