Losing is part of successfully trading. If you treat losing as part of trading then you are an experienced trader.
I agree with you.
if a trader has such a mental then he is a professional trader.
Dare to lose money means Dare to take the decision to get big profits.
I overcame this problem by assuming that I will be the winner at the end. This concentrated me on my trading job and I'm stronger now. Without mental support, it's hard to handle this fear of losing money.