It's hard that sometimes it takes a jarring experience to make us rethink our priorities, but it seems that it's helping you really get back in there, investing on what trully matters to you.
I wholeheartedly agree with what Joffe has said in here, and i trully hope you can patch things up with your love. I don't know what her feelings are, but i can tell from yours that she and your kids are trully the most important thing in your life, so i wish you the best of luck in trying to get things back on track.
Good luck my friend, everyone deserves happiness.
All work and no play makes me..., well, you know the rest.