Cecilia's is the healthiest because she is able to find a middle ground in a conflict and is reasonable in doing so. Also, she tries to find the root of the problem instead of just trying to get her way.
Answer:
My best suggestion would be to plan things out in a way you most like. For me, that means I have a wipe board with colorful markers to write out my daily assignments. This also is super satisfying to erase assignments when I complete them.
For the depression, I suggest taking breaks that are full of self care. This could be meditation, drinking warm tea, skincare, yoga, going for a run, etc.
I hope this helps, feel better!