Be gentle to all and stern with yourself.
The dog that trots about finds a bone.
If you're going through hell, keep going.
The wise does at once what the fool does at last.
Expect problems and eat them for breakfast.
Leap, and the net will appear.
It's always too early to quit.
Things do not happen. Things are made to happen.
To know oneself, one should assert oneself.
Be kind whenever possible. It is always possible.
In my teaching, I enjoyed creating models to clearly communicate my thoughts.