Perfection is a word for flawless, as perfect means accurate and flawless means free of fault and defect. It is the highest degree of excellence. Many people think that imperfection makes you perfect, maybe that is true in some cases but the fact is no one is 100% perfect.
But if you do work so harder to achieve perfection and give it all what you had, able to achieve merely 98% of perfection, it's gonna be superb level as millions of others are not even 95% perfect. You could be a perfect engineer, perfect horse rider, perfect investigator and the list goes on and on.
I am not perfect in anything as I know it and I'm still happy because millions of people around world are like me "Imperfect" but the real fact is that if I do hard work and achieve perfection even 90% in anything in Electrical Engineering then I'm gonna have a perfect career in Electrical Engineering.
Another example why perfection is important, if you are suffering from heart disease you will probably prefer heart specialist because he is perfect in treating heart patients and if your refrigerator is not working you will call refrigeration mechanic because he is specialist or perfect in repairing refrigerators. As we also know that these people are not 100% perfect but they can do a job better than others like eye specialist not gonna help you in your heart problems.
To live a happy and decent life you have to improve your skills and to live an awesome life you do have to perfect your character and anything you like even 90% perfection is gonna help you.