When you use this article - I am the best - "best" stands for you / your ability compared to others
When there is no article - I am the best - the best explanation of your ability for a particular thing is better than your ability in others. This inevitably means that you need to follow the word you are most good at. Otherwise, as SDG said, this is pointless.
I am good at playing soccer. In other words, I am better than playing hockey and doing any other sports than playing rugby. (But I may still be the worst football player in the world.)
It is clear that the best is not necessarily the best. In most cases, the best one is actually the same as a good one. I told myself I did not achieve this cutting-edge skill. Wait a second. When I think about it again, I applied for my master's degree and looked for "the best school in the USA". Yesterday, I looked for "the best pizza in Los Angeles". I searched for "2017 Oscar for Best Actor" using Google. I did not do my best, but I am still looking for it. You may think too much. Rather than looking for "a decent pizzeria" or "domestic secondary school", better results can be obtained by finding the best one.
There is no doubt that life will evaporate in front of us. I want to become the best person. Whether it is a class, taking a class, becoming a best friend, writing the best blog posts, taking responsibility and taking care of my body. There are many things I want to do. From culture it is clear that beliefs are inherited mainly to the Lord. Many people think that our moral system is the result of the Jewish and Christian world view. It is not only religion to believe it (Ben Shapiro, Timothy Keller, Ravi Zacharias), secular intellectuals agree with this idea, Jordan Peterson.
I am not the best. there is no need. I am tired. The "best" idea is temporary. The winner who won the game won once. In the next game, they may not be the best. Are they at least the top 3? Did they break their time from the last game? Although I can do my best I think that it is only a failure because it is not the fastest victory method. Knowing that those people still think they belong to your special butt you think you should not enter a mediocre but at the low level of the room. I believe some people 's skills are much lower than you, but no one thinks they should name the room. Anyone who can not bring you a torch is here to support you. Do not underestimate the power of self-confidence. If you think that you walk is the most stupid, you may make people believe this, just because you are badly distorted about it.