Everything in this world can be used as a mashal for avodas Hashem.
GPS reminds us that no matter what situation a person is in, Hashem is with him, directing him on the right path.
It also teaches us that when a person takes a wrong turn, the GPS doesn’t shout at him. It just tells him what to do now.
Finally, the GPS reminds us that teshuvah is always an option. Even if one is driving the wrong way for many years, he can always find his way to his destination.
~ R’ Elimelech Biderman
Emuna Daily 
What is GPS in this context? I have asked more than once for links to translations for those of us not as learned in Hebrew and acronyms. I enjoy the insights but feel left out when too many unfamiliar phrases are used.