The comedy mask is so good nobody knows you're struggling

Come, sit with me a moment, and let us be honest under the jokes. The better the mask, the more alone it leaves you — the more convincingly you perform being fine, the less anyone can see that you are not, so the very skill that wins the room seals you alone inside it; you are not left unhelped because no one cares, but because you made certain, with great skill, that no one can tell there is anything the matter. The humour was protection once, and now it is a wall — making people laugh kept the pain at a distance, and once that was a real mercy, but a shield held up long enough hardens into a wall, and a wall does not know the difference between keeping out and keeping in; the humour has not betrayed you, it has outlived its job. And let one person see behind it — the wise fool is funny for the square and honest with one friend at the well, so keep the jokes if you like, but let ONE safe person see the face behind the mask, once, with a single true unfunny sentence, "I know I seem fine; I''m not, right now," for the wall needs only one door, and one door is enough to stop being alone. Who is the one person who might be let in first?