Recognition

You use attack to do so because you believe that attack was successful in weakening you.

That is why the recognition of your own invulnerability is so important to the restoration of your sanity. 

For if you accept your invulnerability, you are recognizing that attack has no effect. 

Although you have attacked yourself, you will be demonstrating that nothing really happened. 

Therefore, by attacking you have not done anything. 
Once you realize this you will no longer see any sense in attack, for it manifestly does not work and cannot protect you. 

Yet the recognition of your invulnerability has more than negative value. 

If your attacks on yourself have failed to weaken you, you are still strong. 

You therefore have no need to "equalize" the situation to establish your strength.