Avoidance is procrastination.
It's better to face it than allow it to linger.
One thing introverts do is avoid uncomfortable situations.
Uncomfortable conversations, uncomfortable phone calls, uncomfortable people.
When you combine that with a people-pleaser character trait then you're basically a ninja; hiding and dodging, lurking in the background hoping no one notices you. Maybe you're a shadow, not a ninja.
I've learned that it's better to face the awkward situation quickly, get it over with and move on. It will sting for a while but it's far better than having something ominous looking and lurking around because you don't want to deal with it.
Take a deep breath, be brave for 2 seconds, say the difficult words and be free.