Writing things out is a good way to think about things, and you've already decided on what is important for you this year, so you are off to a good start!
It sounds like you are already headed this way, but you could make a list of all the things you want to do, and the things you feel like you should do, and explore how you feel about them and why.
You mentioned feeling guilty about things a few times. What are the expectations / pressures you're feeling? Why do you think you feel that way? Sometimes digging down to the root of things can help.
Something that helps me is to think about my expectations, and ask myself if it's really reasonable, then consciously choose another set of expectations.
Acknowledging how you feel is important. I have a friend who was struggling with negative thoughts. She learned something that helped her a lot, which was to say or think (in reply to the negative thought) "Thank you for sharing, I choose to think otherwise." Instead of trying to suppress the thought or shove it away--you deal with it by recognizing that you have the power to choose what you want to focus on. Maybe you could modify this for your situation. Something like, "That would be a good thing to do. Right now, I'm going to stay focused on my goals."
You could also try writing down all the things you are feeling pressure to do (but want to set aside for this year), and then put them all in a box or envelope, and tell yourself that they will all be waiting there for you next year, so you don't have to worry about them anymore. You could even make a note on your calendar to open the box / envelope & see what you wrote down. Whenever your mind starts to wander toward one of those things, you can remind yourself that it's safely waiting for you in the box / envelope.