Spirit works with the imagination, not against it. Our imagination is actually a direct sense of potential, which is the realm of spirit.
We waste a lot of time when we worry if we are “merely imagining” spirit messages. When we actually get in the way of spirit, it is usually our fear self who perpetuates or manifests something false. Learning to recognize our fear self is a crucial aspect of getting closer to spirit.
You can ask to meet your fear self directly to help understand it and also heal it. Offer the fear self love and comfort. Getting to know the fear self is ultimately one of the most powerful tools in your spiritual growth, so spend time with it!