If you want to find passion in life, you must start with what you actually love spending time on.
To be honest, passion is not something that can be forced or pushed. You just do what you like, and you just like what you do. It's as simple as that.
Just see what you have an interest in naturally, like I love to write, and that's why I never thought about the perfect timing or some rules or regulations. Ideas naturally come to my mind. Similarly, my mother is at the age of 50, and she sings whenever she can. It doesn't matter whether anyone is listening. It's about what you feel satisfied with.