No worries. Friends listen when you need to talk, and sometimes we all need to talk.
Here's something that I've found to be very useful: Science knows that being happy can make you smile, but we also know that forcing a smile can cause your brain to generate happiness chemistry. The body-mind connection is a two-way street. When you understand this idea, the world changes for you.
So another way to look at it is you're not hiding anything, but training your mind and body to be and feel better. Call is positive energy, flow of nature, the force! (LOL), whatever. We control a lot more of who we are and how we feel than many believe or realize .
At any measure, we're happy that you're happy!