Seek out others who are different.
Engage with different views.
Learn or study something new.
Try new experiences.
Challenge your assumptions.
Write out your own thoughts.
Ask questions.
Become aware of biases.
Read widely.
Look for distinctions.
Observe and interpret.
Take a class.
Change your mind (it’s okay … you’re allowed).
Listen.
How will you expand your thinking?
“Thinking: the talking of the soul with itself.” – Plato