Am I ever gonna be good enough

It seems like i am just not good enough for him
Surely i am having some bad habits that i would like to get rid of myself

I completely agree with those habits are bad 
but what makes me feel down is that the feeling of i am just not good enough 

I want more encouragement
Can you at least give me some credits instead of telling me how terrible i am?
Even Management 101 teaches you that
When you intend to let your employer to know there is certain adjustment she has to make or whatever
you need to tell her how good she is so she knows that
she is NOT completely worthless