What “no go” means

The Ramban at the end of the parshah tells us that after Moshe came to Paroh and warned him Paroh laughed at him. Then the whole affair fizzled out. Moshe returned to Midyan and brought back his family too, and he was there for a full half a year!!! Only after that came the Geulah. Sometimes things look like a “no-go”. There are no good breaks, only bad luck. We can take heart from this account of what happened with Moshe, and not get broken by failure.