Obstacles to hollywood success and other types of success

I did not sing my best due to cold /flu and just bad days but it is ok , i will sing better the next day , or when i sing in public, the obstacle is my inpatient, my perfectionism but i had to remind myself ,take it one day at a time

Studying for a  degree,or any obstacle- my self doubts, haters, or time consuming struggle - i experienced it all

rejections, marginalization, and other doubts i have to overcome