The doctor is not a profession, it is a vocation . And not everyone can become the doctor because it is a huge responsibility . 
For this job you need to be patient, attentive, serenity, kind, you need to have a temperament , serenity and the ability to make decisions very quickly.The most important thing is to be responsible , because people's lives depend on you .
The dedication and unselfishness, love for people and a desire to help them - the inherent quality of a good doctor.
In my opinion doctor is the most difficult and stressful profession .This profession is the most necessary ,the most difficult and the most responsible, and requires constant improvement .
And we can say with confidence that doctors are our heroes !