Objects and spaces might symbolize stability, safety, and emotional connections. By clinging you may just be attempting to maintain a sense of control and continuity amidst life’s changes. They also bring you comfort, so makes sense why change would be hard.

Just an idea but also trying to work on cultivating a more integrated sense of self, could also help not just the attachment work alone. Both address aspects of identity. The integrated self would be more about achieving a clearer and balanced internal self , whereas attachment is more about understanding and improving the dynamics of interpersonal relationships based on early attachment experiences.

I had Janina Fisher recommended to me, but I never bought the book.