Hearts you can buy from a vendor.
Notihng Like being lvl 20ish In full daedric armor. I also LvLed smithng. And found it more of less runied the game for me. /sigh
I didn't rush to level up smithing. That is the role I am playing. I didn't do any of the iron dagger stuff or any of that. And my character wears steel plate armor more often than not, because as a blacksmith that just seems right.
If you let smithing ruin the game for you then that's your own fault. Just because you have
the ability to wear the best armor and wield the best weapon doesn't mean you have to.