Maybe OP can answer this better but the visualization is meant to find similar patterns between the month. You can alternatively use an overlapping curve line graph with different colors for each month but because the values are a range anyway (good to bad) and you can group months together sequentially.

This is a good visual.

You can quickly see that something was up between August and October.

A line graph wouldn’t be able to tell the same data story which is what visuals are for. A line graph might let you know that June had some extremes and that OP has worse moods during the beginning if the month more often.