"Vous ne pouvez pas voir un verre à moitié plein ou vide s'il déborde."

Simplified Meaning:

When a glass is overflowing, you don't need to decide if it's half full or half empty because there's no question about its fullness—it's completely full and then some. Imagine you have a bottle of soda. If you pour so much into a cup that it spills over the sides, there's no point in debating if the cup is partly full or not. It's clear that the cup has more than enough. This idea can be applied to situations in life where there is an abundance of something—whether it's resources, opportunities, or happiness. For example, if you have many job offers, you don't need to stress about whether you have enough opportunities; you obviously do. In essence, it means that when you have plenty more than what you need, the usual worries about scarcity or shortage don't apply. Focus instead on how you will manage or enjoy the abundance you have. This teaches us to recognize and appreciate when we have more than enough and not get caught up in unnecessary doubts or arguments.