On any given day, there are things that work and there are things that don’t work.
If you focus on things that don’t work, you invite more of it. Also, you waste energy that can be channeled towards things that work.
People who strive for perfection are usually frustrated no matter what results they get.
Striving for excellence is a good habit, however, striving for perfection is unattainable and usually leads to disappointment.