Having relationship upsets and disappointments doesn't necessarily mean that we're a mismatch. These things happen, even in the best partnerships and they are not indicators that we're not meant to be together. They are part of the process. The real question has to do with whether or not each of us is willing to learn and grow ourselves into whole, loving human beings.
The truth is, if you want to accomplish the truly big goals in life you're going to have to have the kind of mindset that will get you out there doing what you have to do. In good weather and bad. When you feel like it and when you don't. Day in and day out. In short, you must be willing to do it, No Matter What!