I forgot to add, feeling boring and like you have nothing to say is common in SA. And I am not going to lie, having SA can make people look boring to other people, especially because of the whole resorting to nice guy/girl in times of extreme shyness
I do not know you, so correct me if I am wrong, your feelings could be caused by anxiety alone...
But I can't help but feeling the person who finds you boring the most is yourself?
Aside from trying to connect with people, what other projects and interests do you have?
You don't have to live like a rock star or be James Bond, but for the love of god, never ever settle for a lifestyle that YOU would find boring!
Because if you do, people will intuitively pick up on it, and thus, find you boring as well.
These so-called exciting people around, are not always exciting in the objective sense - they just think they are. It would be impossible to fake this passion, so in your case, maybe it is time to make it become the truth
If you for example learned just one skill this year that you are passionate about,(like I don't know, cooking?) it would add something to live for. You could become a visual artist, a musician, a dancer(I know, I know), or start to read gothic litterature. Just about anything that would make YOU passionate and give you a sense of wonder, I guarantee you, will make other people feel this as well.
You need to do some self-evaluation and come up with your own definition of what would make you happy. Your anxiety has already trapped you in the company of other people, don't let that feeling transfer into the time you spend alone too!
Let go of yourself.