There are never enough hours in the day to finish everything that should be done; something will have to wait until tomorrow. Some of tomorrow's to-do's will be pushed to the next tomorrow. And so it goes. The list never ends.
There's never enough money in the checkbook to do everything that could be done.
Learn to be self-satisfied, because, at the end of the day, nobody's going to say 'thank you' or 'good job'.
The days are long, but the years are short.
This lifestyle is not for sissies.
If it doesn't kill you, it will make you stronger.