"The devil will always be around to tell you that you're not good enough, not worthy enough, not faithful enough to deserve anything from God.  But who said you have to deserve anything God gives you?  Because Jesus did for you and washed you with His blood, you are a candidate for everything that God possesses!

So, quit beating yourself over the head, telling yourself how bad you are and how terribly you've failed ."
(Rick Renner, p.154, Sparkling Gems From the Greek)

"for all have sinned and fall short of the glory of God," (Romans 3:23)
"But God demonstrates his own love for us in this: While we were still sinners, Christ died for us." (Romans 5:8)

It Is NOT About You!  As you can tell from Mr. Renner's comments on how the enemy approaches, the adversary always tries to place the blame, focus, spotlight on you or us.  I reiterate, it is not about you!  It, life is about the one who supplied it to you - God the Father and His One and Only Son, Jesus.  The Holy Spirit comes as a promised bonus, So That Father God might have some representation and followers to empower and do His will here on earth before Jesus comes back.

Always keep this in the forefront of your mind and spirit.  This goes a long way in maintaining the proper perspective, relationship, and attitude with God and others!