When you use the word 'sentient' do you use it in reference to yourself?

If you do not - if you only consider the word 'sentient' in relation to other people, as most people do - then you are describing a quality that you assign to others, not some inherent 'thing' that you can measure in yourself. 'Sentience' in this context is the same as 'handsome' or 'funny' - it's a completely relative, arbitrary term which is purely an effect of your perspective.

The truth is that consciousness is the ultimate indeterminate quantity, because it is indeterminacy itself, because only conscious systems can make choices that are counter to the principle of conservation of energy.

Because of this - because of the fact that literally everything can be perceived to be sentient - it means that everything is conscious because everything is potentially sentient.