"Actually, the fun part was not knowing what the heck I was going to be doing"

In this quote, Utada Hikaru is expressing her pleasure in not knowing what she was going to do. She finds enjoyment in the unidentified and the unpredictability of her future. This could be translated as her welcoming the component of surprise and adventure in her life. It also suggests that she is open to new experiences and is not afraid to get out of her convenience zone. This mindset can be seen as a positive and optimistic outlook on life, where one wants to take risks and welcome the unidentified. Overall, this quote reflects Utada Hikaru's adventurous and spontaneous nature.