Meaning of "Sunny Mystery" by A-ha

The lyrics of "Sunny Mystery" point towards the idea that no matter how hard one tries to escape or avoid difficult memories or experiences, they will always be a part of who we are. The repetition of trying to run and wading through the memories suggests a struggle and a realization that one cannot simply outrun or erase their past. The notion that life is a dream we wake up to and dreams are the life we wake from hints at the cyclical nature of existence. The inability to know for certain what the future holds is highlighted through the reference to life being a "sunny mystery". Ultimately, the song seems to suggest that accepting the uncertainties and challenges of life is a part of the human experience, and that attempting to escape or ignore them is ultimately fruitless.