My response:
A teacher is said to have the most impact on as person’s life. It is as equal as comparing a parent's role in development of a child. The development of a person’s personality can be strongly derived from his learing at various institutions such as school or also sports coaching. As a person's attitude is devirived from his surrounding people, i would say that having a positive mental attitude about everything is a most desirable quality a person could have. but only being positive can certainly affect you adversely. thus, i believe that teaching should incorporate positive as well as practical actions, even if such practical lessons comes at cost of being negative

During a child's teaching years he spends majority of his time at school or at tuition learning about academics or at a various other facilities such for learning extra-curricular activities such as sports, music,etc. Such qualities impacts how a child is grown?, how he behaves in the society?, how does he treat fellow member in his community?, how does he respect other person?. If a person is having positive attitude towards any particular issue in his life, I believe that he can easily overcome any situation he has to face with. Our mentality is the only thing which is obstructing us to reach our so called 'dreams'. If we keep our attitude positive we can surely reach levels we thought were mere dreams. Our mentality is the only obstacle between converting our dreams into goals. 200 years prior, no one would have taught that we can reach space . Its our human's positive mental attitude that we can achieve some thing that we thought were only possible in movies and t.v shows. Currently earth is facing several oil crisis and catastrophic climate changes, but instead of just keeping and wining about the problems, people such as Elon Musk are providing solutions to such problems with help of electric cards and renewable solar energy.

But the people should also focus on the things that our ancestor did which were wrong. Teaching doesn't only means to see forward and to to only hope for positive. One has to be pragmatic in order to be be successful. If we just set unrealistic goals by being positive we will surely fail. Let say if we hope that currently we can achieve some astronomical things such as running a marathon without any practice we will surely fail in such mission. For one to achieve such feet one has to train for months, have a good diet and then one can run a distance. Sure, Nothing is impossible, but remember that Rome wasn't build in a day. One has to think about his mistakes and learn from them which will only come from seeing negative things about one self.

Hence, in order to be successful in life there has to be a balance between practical and being dreamers or' crazy' as some people would call you initially. If such balance is found in person's life one can surely attain great success in his life. If a person has right amount of positiveness in his life, with pinch of negativity only to see his true self, he can certainly reach great heights in his life.