At school and university I had low grades. But in conversations with excellent students, I was convinced that I knew much more outside the school curriculum. I had a broad outlook and a good memory. In 2007-2008, in the Russian traders' competition I was in the top 5 - top 15 among several thousand participants. Here, too, I did not have to doubt my skills.
And finally cryptocurrencies. I am currently on the best blockchain in the world and talking to one of its best users :)
But that doesn't mean you have high self-esteem. Generally, those who are high achievers tend to have low self-esteem, because they push themselves so hard.
Excessive work is not always the best result. In my case - many stock exchange transactions are a high probability of going into the minus and wasted nerves.
I didn't say excessive work, I said high-achiever! They can be quite different things :)