Don't expect your naturally different ways of viewing the world to mesh together well. You'll challenge each other on your ideas of reality. You're naturally a bit more practical and grounded than your pal.
You work hard and you're responsible, and anything less can come across to you as flakiness. But your pal is much more freeform than that. They're in touch with their intuitions at a deep level, and from the outside, it could look to you like they're just acting at random when really they're operating based on some deep inner cues. This method might actually be threatening to you, because you're used to operating based on facts and figures. Calculated risks are your forte, whereas your pal is good at leading with their gut and finding their way by feel. How to meld the two viewpoints? Instead of trying to control your friend's sense of reality, you'll both have to try hard to accept your differences. Convincing each other of your own point of view will be a frustrating and ultimately futile process.