Yvonne, I understand where you are coming from, as it can be awkward to celebrate a behaviour.
Try to think of what your natural self-talk is when something goes right for you. Is it saying “Yesss!” or “Yuhuuu!” or “Awesome!”? Try experimenting with various celebrations until you find the one that best sits with your personality.
Personally, I find looking in the mirror and doing a short dance of joy helps 🙂