Hematite’s main property could be described as “grounding.”
If you tend to have a “flighty” mind, prone to distraction, lack of focus, or anxiety, or even if you feel that you have a strong imagination, but that it’s impacting you negatively, this could be the perfect stone for you.
It won’t “kill” your imagination – quite the opposite, as described above! – but it will give you an increased ability to focus your mind in a productive way, rather than becoming psychically distracted.