Many years ago I read somewhere that the great Chilean pianist Claudio Arrau did not believe in God and I felt sad for him. I just hope that he did change his mind before he died in 1991. In the documentary on the Russian pianist Sviatoslav Richter, who was definitely one of the world's best, I was again saddened to hear him say that he did not like himself. God gave him the genius, yet he had such low self-esteem.
A good test question: Do you like yourself? If your answer is in the negative, then you don't know the love of God yet.