This is common in anxiety because we become so apprehensive about forthcoming events. Self worth is so often at the root of the problem. We don't think much of ourselves so we think others don't either. It's all so unnecessary. An inferiority complex can come about by being put down as a child, or even an adult. Being told we are worthless for years on end is bound to have an effect in later life.
As a matter of interest is this Russian? Like Chinese sign writing I have never been able understand the Cyrillic alphabet. I can get by with a bit of French or German but this is indecipherable. Anyway, good luck to whoever it is.
