To all you educators!

The reality is that no one can really tell you how to be a great teacher.  The truth is it comes with experience.  Like most jobs you are going to learn things that were never mentioned in any textbook.  The key to being successful is knowing how to flourish in challenging situations that occur in every professional environment, especially in a classroom.  With all the advice one can give you to become a more effective or "better" educator, I leave you this.
The three P's that make a teacher great.
Patience. You must be patient, not only with your students, but yourself.  One can not get frustrated with misunderstandings and accommodated needs. There is no such thing as a perfect class.  You have to take time to think, see how you can better your students learning experience, and through the accomplishments of breaking through classroom barriers you will better yourself as an educator.
Passion. You must be passionate about your work and the work you do with or provide for your students.  If you don't love what you teach, that will make your job more difficult than any disruptive student.  Your attitude reflects on your student's actions. Again there is no such thing as a perfect class, but your passions of what you teach will instill in your students, and those that grab onto it will thrive in ways every teacher wants their students to.
Perseverance. There can be no giving up when it comes to teaching and learning. It is crucial to know that no matter the challenge whether it be student or educator based, one must persevere in reaching the goal of understanding the misunderstood, and giving assurance of ability to accomplish the unachieved.  
Take this advice and use it with all you have learned.  But most importantly use your instincts as an educator, and learn from your students.  Knowing who you are teaching, is as important as knowing what your are teaching.