Feeling of worthlessness

Today something happened in my ward , the family members of the patient to whom I was allocated was very rude and slapped me in face , saying I am just some no skilled nursing personal when I am not even a staff , I am a student and I am still learning , I accept I was wrong and I apologised as well but still they slapped me and throw some harsh words , You are getting the feeling right, where you try very hard knowing you too have a limitation or the maximum potential, I am not some talented or God gifted student , I accept that but I always try to utilize my maximum potential but still it hurts , it just feels very wrong and unjust full , this feeling, it's just suffocating and wherever you feel this way you became useless , feels like my efforts doesn't mean anything to anyone, I am recently trying to forgive me , to make myself always happy but its just ....... Frustrating.... I understand everything how the world is and how it works but I just needed to let it out so thanks and sorry