Go for it now. The future is promised to no one.
Begin to be now what you will be hereafter.
After a storm comes a calm.
Know or listen to those who know.
Problems are not stop signs, they are guidelines.
Always desire to learn something useful.
Expect problems and eat them for breakfast.
Only the educated are free.
Well done is better than well said.
Quality is not an act, it is a habit.
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.