Worried for nothing in My life

So I woke up this morning upset and depressed thinking I said something wrong. I stayed up until about 4 am last night not being able to sleep until I heard from you. I bit all my nails off in an anxious fidget and kept biting until my fingers and teeth hurt. I can’t sleep when I feel like there is something wrong. I checked my email one last time before I got sleepy in hopes that you might have emailed me. There was nothing. I finally closed my eyes and slowly drifted to sleep. When I got up this morning I figured I should just say sorry and step away. I wrote you an email saying that I will step out of your life and that I will not contact you anymore. I felt sad, but I had to do it. 5 minutes later I get a call on my phone. I didn’t look at the phone number, I just answered. I heard your voice and I was so happy. Why do I worry so much?