"I think that instinct, that storytelling instinct, rescued me most of my life"

Armistead Maupin is recommending that his storytelling instinct has actually been a conserving grace throughout his life. He believes that this instinct has been a source of strength and guidance, assisting him to make decisions and navigate tight spots. It has actually given comfort and security, enabling him to reveal himself and make sense of the world around him. He is recommending that this impulse has actually been a powerful tool in his life, assisting him to make sense of the world and find his location in it. He is expressing appreciation for this impulse, recognizing its importance in his life and the function it has actually played in helping him to make it through and thrive.