Writers Block

okay so when you are writing something and then its all like "Oh shit. I dont know what to write anymore" and then you start to get all frustrated because you cant think of a single SINGLE thing to write but then when you do, it seems like crap. thats what I hate. writers block is what I hate most when I am writing a story. especially when my readers are asking for more and then I have to keep writing bak to them saying "I cant post right now" or when I finally do post something good then at the bottom I write "I was sick and wasnt able to post anything" but thats only if I was sick, or I write "sorry writers block. took a while but then it all came back to me"