I was wondering the same thing. It already takes a very high level of motivation and self discipline to go 3 times a week, going every day requires superhuman levels to so consistently.
This doesn't take into account that your body requires rest, and I don't know how op thinks you can combine this with an active sport like skiing, or something creative like music. You will be drained already from the gym.
It's not just about motivation and self discipline, but your body needs recovery days.
During my the year before my BA started and in the first year of it, I went 4 - 5 days a week, including Sauna afterwards.
Thats easy if you have no responsibility