Impossible goals for 2019 and 2020

Last year, I set an impossible work-related goal and, during the course of 2019, I did not take the necessary action.

Now, I was reviewing last December work and felt that my plan was very good, I just did not follow it massively.

I have decided not to blame myself because I have worked on my thoughts and feelings during the year, and feel that I have made progress.

For 2020, I want to choose another impossible goal, health-related (that is now more urgent).

But the other goal is still good, and I do not want to give up on it.

To reach both, I would need the same skills, that is, I will need to be a person who honours my own word and follow my own plans.

Do you have any advice?
Should I work only on the new goal until reaching it?
Can I work in the skills that are common for both?