This past July, Karen X. Cheng’s video of her learning to dance in 100 days went viral. Since then, from what I’ve read in TechCrunch, Cheng has started a new company with a co-founder called Give It 100 - “Practice something for 100 days. Take a video everyday.”
Perhaps this platform can help you reach one of your new year’s resolutions.
It’ll be interesting to see how well this site / service does. I think it’s pretty hard for most people to commit themselves to learn and practice a new skill over a short period of time, let alone 3+ months.