If you put a frog in a vessel of water and start heating the water, the frog is able to adjust its body temperature as the temperature rises. It keeps on adjusting to the increase in temperature. When the water is about to reach boiling point, the frog will fail to adjust anymore. At that point it decides to jump out but is unable to do so, because it has spent all its strength adjusting to the rising water temperature. Very soon the frog will die.
What killed the frog? Many of us would say the boiling water. But the truth is the frog was killed by its inability to jump out in good time. We all need to adjust to people and situations, but we need to be sure when we need to adjust and when we need to confront or leave.