No thought, good or bad, can truly define who we are.
We are more than our mind.
The experience of being able to observe our thoughts and our mind proves that who we really are cannot be narrating or viewing from inside the mind.
Practice observing automatic thought patterns, and look into them. Discern what is life enhancing and what isn’t.
We can’t stop thoughts from coming, but we can learn to choose what thoughts we are going to follow and use.