“Happiness and freedom begin with a clear understanding of one
principle: Some things are within our control, and some things
are not. It is only after you have faced up to this fundamental
rule and learned to distinguish between what you can and can’t
control that inner tranquility and our effectiveness become
possible.” Epictetus, The Art Of Living
Spend your life on things that you can control and those things
that have the most impact on your life. Do not try to control
others nor spend time on what is not under your control.
The most important thing to gain control over is to master your
internal world, as it is the way to happiness AND to success and
mastery in the external world. Yes, it is less tangible than the
external, but its value is priceless in comparison.
Read the whole piece: Do The Internal Work First! - It
will have a huge impact on your life!