Jesus said that those who humble themselves will be exalted. What does that mean? It is one of those universal principles for this life and the next. For instance, when we flatter ourselves, people naturally tend to look down on us. We actually lower ourselves in their eyes. On the contrary, if we have a modest opinion of ourselves, then others tend to honor us more highly.
When we behave in an unassuming manner of humility and servanthood we are inclined to have a more attractive personality. When we assign ourselves a lower rank and prefer to give honor and deference to others, people like us and will be far more liable to praise us. The same is true of our reward in eternity. If we have the bad habit of exalting ourselves in this life, our eternal reward will be far more humble. On the other hand, if we humble ourselves, we will be exalted. That's what Jesus said.