What a sad reality you have written. I have seen many people just as you have described them. Facades, smiling, very happy people, who carry burdens inside. One day when we least suspected it we received a call; He tried to end his life.
Why didn't I see it?
Because his smile was simply a facade, his joy a disguise.
Few people can be discovered in that hidden reality.

Let us be suspicious, let us always be suspicious of that histrionic character, who always smiles, who never cries, who always tells happily; Let's get rid of that behavior and we will be right.