Going through your write up i can say that this particular emotion gaining control in your brain headquarters is JOY,
Most of your moment are full with joy and happiness, such as the moments you spend with your nephew which brings you enough joy, kids that are very active and playful are always fun to be with.

They help take away some of your anxiety and worries and bring back that positive energy in us. Also your moment in music school was full with joy and excitement, although it's normal that's we can't live without a problem which brings sadness and anxietys, you still managed to keep your smiling face and keep a room for joy to keep rolling as the headquarters in your brain.

Have a great day ma'am 🌺