Variety

If you teach frequently, you may find that you are in a rut, teaching the same way, using the same kinds of devices, even relating stories again after only a short while.

Your students will likely notice it sooner than you do.

Pray about this, and try using a different approach. It might not feel comfortable. It might not feel as effective. Set aside your self-judgment on this, and push out. You'll grow in your abilities as a teacher.