Arriver is a such a useful French verb. You can arrive at an accomplishment or comprehension of how to do something, people and things arrive, of course, when they come toward you from away, and the expression "ça arrive" means something a little like "shit happens", which we say too, but the French (having invented the idea) say it better.
Arriver is the perfect verb for my life right now. J'arrive, ils arriveront, et, oui, ça arrive.