Hi,
It's been pointed out to me that low self esteem, low self worth, and yes, shame - toxic shame - probably a few other things as well - lie at the heart of these kinds of thoughts and feelings, and actually it's not all that uncommon ExplodingSun56, though, I fully believe the severity differs from person to person. You can internet search the causes and also ways to manage it, and by implementing coping mechanisms etc., in time there's a good chance it wont have the same impact on you. I'm less effected by it now than I used to be, definitely.