“Don’t be so hard on yourself,” we hear. There is truth in that advice.
Tiferet is the Sefirah of truth and of ‘balance.’ Knowing we and others, ‘see but partially as through a lens,’ in our present reality.
Putting it another way, we all have a ‘subjective view of an objective reality’ – like the characters in the Matrix movie.
Keep “First things First,” and you won’t waste time or energy on ‘being frustrated’ – with yourself or others.