Practice

Deliberate practice takes time and people also need to find and solve problems and mistakes during it. To be a high performing solo musician for the violin you also have to spend several dozen hundreds of hours in solitary practice. When it comes to other things, for example, studying geometry, it is still the case. During practice you should identify your weakness, focus on it, and carry out further deliberate practice to demonstrate how important deliberate practice is. Even for talents, they generally need spend ten years to achieve the high international level of recognition. So there is no need for average people to be ashamed to practice.