You'll naturally share a lot of respect for each other, and that will allow you to keep growing as individuals even as you get closer as friends. This connection will be, in part, about supporting your personal growth and helping your friend learn to lighten up a little bit. They can be a little too work- or career-oriented, but they'll learn from you how to let those things slide every now and again in order to make time for the more fun side of life.
It's all about balance, isn't it? Your aims and goals in life will be a focus of this relationship, and you'll be able to help each other in meeting your individual goals. You might decide to go into business or some other enterprise together; if so, this should work out well, because you trust each other and you have complementary strengths that will come together to make an amazing team.