- It's going to boil down to keeping your pecker up, looking on the best side of things.
peckerpeck‧er /ˈpekə $ -ər/ noun [countable] 
1keep your pecker up British English old-fashioned informal used to tell someone to stay cheerful even when it is difficult to do so2American English informal penis
1keep your pecker up British English old-fashioned informal used to tell someone to stay cheerful even when it is difficult to do so2American English informal penis