What evidence in act 2 shows that Willy has regained his interest in life?

In Act II, Willy sits at the kitchen table and claims that he slept well for the first time in months. Linda says that it was thrilling to see the boys leaving together, and says that Biff had a new, hopeful attitude. Willy dreams about buying a little place in the country. Linda asks Willy if he will talk to Howard today, and he says that he will tell Howard to take him off the road.