affirmation

It has been suggested to me that I utter an affirmation each morning on waking, in an attempt to quell the self critical voice that leads me to stifle ideas before ever giving birth to them, causes me to wage destruction upon the works that do slip past my censorious gaze to be born, and stays my drawing hand. I am led to consider the words I should choose.  I cannot yet proclaim " I am an artist", or " I am a writer". Would " I can write", meet the case, or " I can draw", the emphasis being very much placed on the positive can, or should I attempt a more profound declaration, one which prefigures the above, and affirms that which depressive thinking renders almost impossible, " I am worthy" or  perhaps, "I do deserve to live?