I have always thought that the goal of philosophy was to change the way I behaved or thought. Likewise, I minored in psychology to understand the nature of my own behavior so that I would be more capable of changing it. To loosely quote everyone's favorite philosopher "everyone is a philosopher whether they realize it or not". Meaning most people are living by their subconscious impulses, but the philosopher becomes introspective and question how they are living. Nothing could be more practical, but as PG points out philosophy does not usually have this goal in mind.