"Anesthésier la douleur temporairement la rendra plus insupportable lorsque vous la ressentirez vraiment."

Simplified Meaning:

If you try to avoid dealing with your problems and just push them aside, they will become even harder to face later on. Imagine you have a big homework assignment that you keep ignoring. At first, you might feel relieved because you’re not thinking about it. But soon, the deadline comes closer and you start to panic. All the stress you ignored now hits you even harder. Dealing with pain or problems right away might be tough, but it stops them from growing bigger and more difficult to handle. It’s like pulling out a splinter right away; it hurts a bit now, but if you leave it, the area might get infected and hurt a lot more later on. By facing your issues head-on, you can work through them and not let them control you or become overwhelming. It’s better to deal with a small amount of pain now than a lot of pain later.