I feel like it is important to recognise that being bald or grey is no big deal. It's just ego stuff. However, it is also important to recognise that we do have a choice in this. Yes, it takes some effort, but everything worthwhile in life does.
I commend you on the cold showers. Back in Indonesia it was a pleasure to do this. Here in France it is not so easy, as the water seems much colder. Am still perfecting breathing techniques to help me stay under longer.
For sure I will keep you updated. Like I said, I will be singing this from the rooftops!