Repeat after me:
"When I choose to remove someone from my life, it doesn't mean I hate them. It means I respect myself."
Via Tiny Buddha
I'd like to add, when it comes to ending toxic relationships..
If they respond, trying to tear you down by saying "You just think you're better than me."
My internal response has always been," No, I'm not better than you, I'm just better off without you".
Either way there is pain.
Choose your pain wisely.