First of all, one needs the right attitude, which one can achieve by developing a good heart (shin, 心 ). One must be persistent and face challenges with courage. And courage is not the absence of fear. One who faces a real attack and is not afraid is a fool. Courage is knowing that something is dangerous, but doing what you have to do anyway.

Then you need to have the right technique (gi, waza, 技). Here, besides diligence, patience and humility are needed. In the beginning, the techniques are performed slowly, with the aim of ensuring that the movements are correctly anchored and to avoid accidents. But over time, you need to get to the point where you can perform them quickly and confidently, even on a resisting opponent.

Finally, you need a well-trained body (tai, 体) that can perform those techniques properly. Such a body is flexible and strong at the same time, and is capable of persistent work. To control it, you need a high degree of body awareness and a sense of balance.