Negative self talk about anything, including art journaling, is very common. We all talk negatively to ourselves at times. What helps me is to try to increase awareness of the negative comments I am saying to myself. Identify the negative statements. And come up with an alternative positive thought.
In my journal I write down my negative thoughts
Then I paint over them, and paint out those negative thoughts, so they almost disappear.
Next I write alternative positive thoughts, and add positive images.
This process works for me to try to combat my negative thoughts.
What helps you deal with your negative thoughts?