It is difficult for a student to pick a good teacher, but it is more difficult for a teacher to pick a good student.
We all have inner demons to fight, we call these demons, fear and hatred and anger. If you do not conquer them then a life of one hundred years is a tragedy. If you do, then a life of a single day can be a triumph.
The ideal in Martial Arts is humanitarianism. Accomplishment uses diligence as a goal.
Do not fight with the strength, absorb it, and it flows, use it.
Students from the same teacher will differ in their skills
Relax and calm your mind. Forget about yourself and follow your opponent's movement.