If you're going through hell, keep going.
Do not weep do not wax indignant. Understand.
Problems are not stop signs, they are guidelines.
Begin to be now what you will be hereafter.
I can, therefore I am.
After a storm comes a calm.
What you do today can improve all your tomorrows.
To be a good loser is to learn how to win.
Never complain and never explain.
Without hard work, nothing grows but weeds.
In hard-core science fiction in which characters are responding to a change in environment, caused by nature or the universe or technology, what readers want to see is how people cope, and so the character are present to cope, or fail to cope.