Surprise yourself first.
When you hit a plateau, one of the effective tactics to get out of it is to surprise yourself.
We all do something creative every day in a sense. But we tend to apply the same method to what we do, and we easily get bored. Other people might still like your work, but you are no longer interested in it. That’s a very dangerous situation, because it can wipe out your motivation to do or create something unique.
Whenever you have a chance, try a completely different way to do a certain thing. Use the method you’ve never used. Or create a thing that is completely different from what you originally intended.
You might be disappointed by the outcome. But disappointment is a different form of surprise, and much better than boredom.