I also turn 41 in march.
I have a scattering of gray hairs, but no bald spots, and only a slight receding at the temples.
You know what, I don't care.
I can't do anything about my age. I could do something about the hair, but I'd rather spend the money on other things. If it starts to really fall out, I'll just shave my head.
My health I do care about so I am working out three or four times a week. I have a Karate class once a week plus practice at home three or four days a week.