Your best depends on the quality of your body and mind. When you’re tired, upset, angry or jealous your best will be less than when you feel rested, happy, fulfilled and thankful.
Take care of yourself. Don’t overdo it so much that you deplete your resources and can’t help yourself or others. But no matter where you are, depleted or replenished you can still do your best.
Why does this really even matter? Because doing your best means you can’t judge yourself. If you don’t judge yourself then you avoid the harsh criticism of the judge, victimization, self-blame and self-punishment that lives in the mind. This cycle entraps us creating a prison in your own body and ultimately restricts us from living in our full potential.