Look around and enjoy where you are now and how far you've come. You might be surprised at just how high you've managed to climb.
Yes, it was very unexpected, and you're not very impressed at all. It wasn't what you wanted to hear, and it wasn't something that you wanted to deal with. Isn't life frustrating sometimes? Just when you thought it was safe to put your feet up, relax, and forget about some old problems, they spring up again and force you to deal with them. Stay positive. You've got plenty of experience with this sort of thing, and you'll soon be back on track. The universe isn't going to let you fall down.
If you find yourself pretending to know what everyone else is talking about, it's time to educate yourself before things get embarrassing.