Cutting words is important. You know it's true.
I understand that it can sometimes be hard to do, but cutting can be a big part of revision. Yes, I know it might hurt. They're your words and ideas. You don't want to do cut them and no one can make you!
Well that's true too. You don't HAVE to take your words out. But sometimes, maybe many times, cutting words can make your story better. This may especially be true in the case of picture books where trends are skewing to shorter texts that let illustrations take a huge role in telling the story. I made a list of unnecessary words, but cutting can involve so much more.
I recently revised (okay, re-re-re-revised) a picture book. I loved the characters. The dialogue. The jokes! But I realized I needed to focus on the main character and his story. The other characters were taking away from that focus. So, as much as it hurt I had to chop the princess, nix the cat, and banish the bird. Oh, and take out the gumballs. (My son wasn't too happy about that!)
Is the story more focused? I think so. Is it shorter? Definitely. But in taking away I added new elements, stronger conflict, and a stronger arc. Sure, I miss the old characters a little but I like the new direction the story is heading.
Don't be afraid to cut your words or even entire characters. Cutting can take your manuscript to new places you hadn't thought of before. And don't worry, you can always put the words back if you need them. That's what cut and paste is for!