Short note: Why is a person often harmed not by outer enemies, but by the swelling of the self?
On the spiritual level, one of the things that wounds a person most is ego. Ego is not only seeing oneself as greater than one is; it is placing oneself in front of truth. That is why ego works quietly. Sometimes it becomes pride, sometimes stubbornness, sometimes the desire to be right, and sometimes the habit of belittling others.
At first, ego looks like strength. It seems to protect the person. Yet most of the time, it pulls the person away from real growth. Growth requires seeing; ego prefers defending rather than seeing. When a person can no longer see their own mistake, decay begins not from outside, but from within.
We see the same thing in many parts of life. The one who says “I already know” cannot learn. The one who says “I will not fall” may suffer the hardest fall. The one who says “I will not bow” does not only reject a command; they also reject the possibility of going beyond themselves. That is why ego is often not self-protection, but spiritual closure.
The point is not for a person to erase the self, but to place the self correctly. A person may be valuable, but not absolute. Strong, but not flawless. Worthy of respect, but not beyond accountability. A self that forgets this loses both peace and direction over time.
Ego gives a temporary feeling of elevation, but in the long run it isolates. It distances a person from connection, understanding, surrender, and transformation. What makes it costly is exactly this.