@SHEISONFIREEE In this context “is” can be used and its totally okay, in fact it is very formal. Here by “all” the writer means everything not everyone. It’s just like saying “I hope everything is going well.” You don’t say “I hope everything are going well.” Right?
Life hits you on a different level when you work 15 hours per a day, someone in your family just died and you are so sick you can’t spend 2 min without coughing.