Having lots of knowledge is not the only way to success. but also requires a strong mentality to deal with everything. this is what many intelligent people do not have. success surely requires maximum effort. and of course there will be many obstacles. because it requires a strong mentality.
but unfortunately, many intelligent people do not have a strong mentality. many intelligent people, when faced with a problem, are quick to give up. and many intelligent people, do not have the courage to speak in front of many people. things like that will hamper success.
To have a strong mentality, you can also exercise. no need to rush. try slowly. First, talk to 2 people, 3 people, and so on. I'm sure you can do it. and try to keep the spirit to solve the problems that come. because all problems have solutions to overcome them.