You'll likely find that you're at odds in the ways you think and communicate. You naturally possess a more forceful, dominant personality than your friend, and you could find their cautious approach to be a drag on your naturally high energy. It's likely that you'll both be more attuned to the differences between you than the similarities, and to the qualities you don't like in one another rather than the qualities you respect or appreciate.
This is just a natural, if unfortunate, focus for you two. But a friendship between you could have an overall positive effect if it forces you to examine your own natures and make conscious changes in the ways you meet the world.