I'm a music teacher. Let me tell you a secret.
The sooner you start, the longer it takes. Learning to play an instrument is a lifetime journey. You will never stop learning. No matter how accomplished you are, no matter how much you know, no matter how much skill you acquire, there is always, ALWAYS a higher, steeper, more difficult peak to climb just ahead on the path. So the time to start is the moment that you decide to start.
Let me tell you another secret.
It's ok to do things badly. Let go of the falsehood that there is only value in doing something you enjoy, only if you're good at it. At first, you're going to be bad at this. It will not be beautiful. Do it anyway. If you persist, and you learn to enjoy doing it despite being bad at it, eventually you will stop being bad at it. And then, when you do it, it will be enjoyable AND beautiful.