"Je n'ai jamais dit que ce serait facile, j'ai seulement dit que ça en vaudrait la peine."

Simplified Meaning:

Taking on challenging tasks or goals in life can be really tough. Many people go through hard times and face struggles when they try to achieve something important. For example, if someone decides to run a marathon, the training can be exhausting and painful. However, when the race is over and they cross the finish line, the sense of achievement and pride is incredibly rewarding. This saying points out that while the journey might be difficult and full of obstacles, the end results make all the hard work and effort valuable. It encourages people not to give up just because something is hard, because the benefits and satisfaction they get at the end will make everything they went through feel worthwhile. This could apply to various aspects of life, whether it's pursuing an education, building a career, or nurturing relationships. Facing challenges head-on can lead to very satisfying outcomes that you wouldn’t experience if you took the easy route.