Never complain and never explain.
Begin to be now what you will be hereafter.
Without hard work, nothing grows but weeds.
Expect problems and eat them for breakfast.
Leap, and the net will appear.
Know or listen to those who know.
Go for it now. The future is promised to no one.
If you can dream it, you can do it.
What you do today can improve all your tomorrows.
I can, therefore I am.
If you always put limit on everything you do, physical or anything else. It will spread into your work and into your life. There are no limits. There are only plateaus, and you must not stay there, you must go beyond them.