Every song has its own journey.
Don't wait until everything is just right. It will never be perfect. There will always be challenges, obstacles and less than perfect conditions. So what. Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident and more and more successful.
The only thing that I can say is I try my best in every moment.
用责备别人的态度责备自己，用原谅自己的态度对待别人。
"In machine learning, the goal is not just to fit the data, but to find a model that captures the underlying structure of the data."