Our soul is our mind, will and emotions. To lose your soul means
➛ you lose your mind,
➛ you lose your will and
➛ you lose your emotions.
You lose your mind by becoming enslaved to the enemy's way of thinking.
You lose your will by becoming enslaved to the habits and addictions that destroy life.
You lose your emotions by out of control anger and lust.
For such the end is destruction of their soul in the Lake Of Fire.