Leap, and the net will appear.
I can, therefore I am.
Go for it now. The future is promised to no one.
The dog that trots about finds a bone.
Either you run the day or the day runs you.
The most effective way to do it, is to do it.
If you can dream it, you can do it.
Be kind whenever possible. It is always possible.
Know or listen to those who know.
If you're going through hell, keep going.
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.