If someone or something chases away worries, fears, or other bad feelings, they cause those feelings to change and become happier. (The Collins English Dictionary)
Several examples I have found on the internet.
"Chase away the winter blues"
"Here are three great hiking destinations to chase that June Gloom away." https://www.rei.com/blog/hike/how-to-beat-l-a-s-june-gloom
Perhaps I am overthinking. Does "chase away a feeling" mean make the effects of the feeling gone(the feeling is gone temporarily) or does it mean make the feeling gone for good(eradicate the feeling)?
For example, if a hike chases my June gloom away, will my gloom come back after I have finished the hike?