You are holy and without blame before Him. 1 Peter 1:16
Stop saying you aren't worthy.
All the self-talk about your unworthiness is an insult to God Who made you.
Stop buying all the lies and start believing the Truth of what God says about you.
Your healing comes when that seed of unworthiness is completely destroyed.
Speak the "Who I Am In Christ" list (see below) over yourself in times of discouragement. When overwhelming depression begins to suck you under, pray! Speak in tongues if you can. THIS IS HOW YOU WILL PUT ROUNDUP ON THAT SEED OF SELF-LOATHING.
This is the pesticide you need to kill the cancer within your soul.