Do you really need to choose your path? Let's say you see something as some dumb crap. You can learn those dumb rules really well > become a good player and change things from within. This works really well. There are such paths you can find if you dig out some info on people who changed the world. If you want to get the best out of a river you can find a place that has already proved to be effective and efficient. But does it mean that it is the only way? The available choices might not be the ones that are most compatible with you. Sure you can learn something from each of those world changing paths, but you are the one who knows which is the best for your design/version.
Be aware of yourself and learn to design yourself. Along the way you'll be more sensitive to the reality. Your perception will improve and you'll be able to know the best way to make things happen like a chief. You'll feel like kind of a mini-god. If you are at least close to this level you might want to think about messing with this so called "destiny" thing. I recommend watching The Matrix Revolutions (2003) and end of Reloaded. If you bake your noodle enough you'll have an idea about what this "destiny" is. It's kind of like a very advanced RPG which means: if you are sensitive enough you might see ways to spawn great impacts in avant-garde ways.
Xtra tip: You'll also need to think about how your own design of game changer affects you and everything around you. Things might get harsh. Maybe the path is a shortcut but will require a small period of hell. Keep 50% of your attention on your personal stats and make yourself and the game-plan sync more accurately or you'll lose a great deal of efficiency.