When you're struggling with something, look at all the people around you and realize that every single person you see is struggling with something, and to them, it's just as hard as what you're going through.

This quote is saying that no matter what you are going through in life, it is important to remember that everybody has their own struggles. Everyone faces challenges, and it is important to realize that each person is struggling in their own way and that they too perceive their problems to be as difficult as yours. It suggests that understanding that other people are struggling in their own way can bring a sense of solidarity and make you not feel so alone in your own struggle.