I'm a bit late to the party, but there are still enough 3Days in 2017 to give it a try!
I'm trying to improve every day, but I tend to rather watch timelapses/tuts that actually modelling something, which is obviously not really good. I hope to change this a bit with 3Daily rules, don't know if I would be making 1 object every day, but I would try to upload everyday WIPs at least. Hopefully that theme would keep me motivated for the entire year
Have fun, C&C are very welcome
EDIT: Whole January recap here: https://www.artstation.com/artwork/OJA9y
Starting today with marble material created with Substance Designer