Do wishes really not come true if you tell someone what you wished for? Where did that superstition come from? Did someone make a wish, keep it a secret, and it came true? I wonder if wishes you tell people come true.
It seems more likely to me that if you tell people what you wished for, it would come true. The more you talk about it, write it down, think about it, the more likely it is you'll be focused on what you wish, and you'll make it come true.