Things are going so well. Why do I feel like everything is just going to fall apart soon after?*
Sometimes, when we have experienced pain and hardship, it can be difficult to believe that good thing can happen, and when they happen, that they can last. Because you've been in a dark place, you feel like the light might go out at any time. It's not going to. You are the one who controls the light switch.
Sometimes we fear the unknown. Embrace where you are and take things day by day. I'm sure you'll be great at whatever is ahead.
When life is feeling great and it's something you're not use to, it can bring a sense of worry like you're living the calm before the storm. But, once we learn to live in the moment that sense will go away, and make this positive time more likely to stay.