Our inner demons lead us to negatively judge ourselves, further leading to avoiding that judgment, and eventually starting the internal self-destruction, if the negative downward spiral is left unchecked.

Having demons or internal insecurities is not something exclusive, but is, in fact, a common reality among human beings. 

Everyone faces their demons, and it helps us to understand and learn about ourselves.

You can befriend your demons, by facing them and objectively understanding the insecurity.

You will get insights about your demon and will begin to realize your various traits and the side effects it produces.

Carl Jung defined shadow as all of the parts of ourselves that we despise or loathe and therefore hide and avoid. It is impossible to run away or lose your shadow because ultimately, your shadow is a representation of you. 

No shadow can exist without a source of light. To rid yourself of your shadow would require you to rid yourself of the light in your life and thus, live in utter darkness. But denying our shadows and everything they contain is a source of a great deal of human suffering.

If you choose to value something in your life, you are also choosing the other side of the coin, which is the failure of that value, automatically.

No one can just choose to take the good while not taking the bad.