I laughed about that pesky turtle, "Doubt", on your bootcamp thread. Pia says, "Hug your demons or they'll bite you in the a$$."
I'll bet that if you allow that pesky turtle into your meditations and do your job of feeling your feelings, then he'll get bored soon enough. He'll either leave or quit being so pesky. I mean, he's outnumbered by all his turtle buddies. Let him hang around and maybe he'll grow up into discernment or persistence or something.