When should I refactor my code into a decorator

Continue reading the book, this is a very good book. I suggest you to read it too.

It says:

1. don’t create a decorator in the first place. Wait until you see the pattern.
   Yes, I totally agree. I created a decorator for user login and payload validation after I used it everywhere and found the pattern.

2. Create the decorator if it will be used more than three times.
   Okay, that also make senses. Why should I create a decorator if I only use the logic once.
   Not sure if it’s twice. But three is a fair number for me.

3. Keep the code in decorator minimum.
   Too much line and logic will give me a headache when applying a decorator.