Yep, But ill give examples, How life is going for them and what has been happening in their life and how they act correspondingly, Either they act happy or sad, Or mention the good things that are hapenning to them and how its improving..

How can anyone proof they're doin good gm
behind every smile is a crack off hatred sadness and ignorance

Any way you can give evidence that you are indeed doing good?

Trust me i.m doing good fine better

Probable, Since many hide their problems.