You are not your feelings, nor are you a diagnosis or an experience that you are having. If you can begin to see yourself as the one who watches or notices your experiences than it will be far easier to let go of limiting feelings and thoughts and perceptions.
As you begin to identify yourself as the part of you that observes your experience instead of identifying yourself as your experience (e.g., “I am depressed” becomes “I am the awareness that a part of me experiences depression.”) you will begin to experience a sense of freedom from the problems in your life.
So the first step is to move the focus of your awareness from 'I am a tired, frustrated caregiver' to 'I am the part of me that observes that I feel like a tired, frustrated caregiver. I am the observer.'