Some obsession is fine and part of the attachment. I think you're saying that it's reached a point where you're not comfortable with it. Is your psychiatrist also your therapist or just your medication provider? If you also have a therapist, talk to your therapist about it. It's an interesting topic to explore and you'll learn a lot about you

Obsession (I had one until recently, and it also filled a huge need for me) does really interfere with your life. It uses up so much energy that could be used for other things, like you mentioned. I could not even do the things I enjoyed because I was so anxious thinking about the person. I'm only recently free of it, after talking to my T about for months. It was hard to let go (but then letting go is hard for me anyway) but it is freeing and calming. T and I are now talking about how those needs can billed fulfilled in other ways that are meaningful and fulfilling.