You may encounter one from time to time, but you've got to find a way to get over it, around it, or through it. But whatever you do, don't succumb to it. Don't give in to the wall.
Uno puede encontrar un muro cada tanto pero uno tiene que encontrar la manera de pasarlo por encima, rodearlo o atravesarlo Sin importar lo que uno haga, no hay que sucumbir, no rendirse ante el muro.