Social anxiety

Anyone else have issues with people just showing up and walking in unannounced? I’m the kind of person who needs a good heads up about company so I can mentally and emotionally prepare for it. I hate being like this, and people think I’m a jerk because of it. I want to be the type of person who’s excited when people drop by or who can go places and hang out with others, but I’m not. My anxiety takes over and it’s draining. Any pointers?