I used to think I had aphantasia, but I’m not entirely sure if that’s the case. For example, I can’t visualize in my mind’s eye something as vivid as a dream. My memories are not totally vivid either, but it’s not as if I can’t remember things visually.

I do wish I could imagine more vividly, but for me it’s far from not being able to visualize at all.

As far as tips, I think you have to stop repeating this thought to yourself that you’re limited in ability or unable to do something. If you try to do something but say to yourself “I can’t do this” then you aren’t going to succeed. If you believe you can there’s no guarantee that it’ll make it happen, or happem immediately, but you’ll undoubtedly get better results