Editing is tough. It’s described as “killing your babies” for a reason. It hurts to cut out passages and (ugh!) chapters you worked hours to craft and polish.
Here’s something that helps me. Take the passage or chapter you are about to ax and preserve it in a new Word document. Copy, paste and save. Somehow, this makes it easier to do the inevitable. Because the words you crafted still exist somewhere, preserved for that day you need the perfect description of cats or coffee or murder they contained.