Most of the time, I think in concepts. I hear for other people with aphantasia, they can only think in concepts, but after talking about it with an expert, it seems like I have spacial awareness. I still can't visualize anything, but I have an understanding of what things are and how they look like. For the past few weeks, I've been trying mental exercises to help my "mind's eye", but it doesn't seem like it's going anywhere just yet.