Problems are not stop signs, they are guidelines.
Go for it now. The future is promised to no one.
Who seeks shall find.
Always desire to learn something useful.
Expect problems and eat them for breakfast.
After a storm comes a calm.
Things do not happen. Things are made to happen.
Be kind whenever possible. It is always possible.
The most effective way to do it, is to do it.
Begin to be now what you will be hereafter.
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.