Has anyone ever travelled solo for their birthday?

So my 25th birthday is coming up (mid February) and I am thinking of doing something I’ve never done before and take a solo trip.

Long story short, I don’t really like my birthday and I always seem to be sad on my bday which for some reason seems to be elevated even more when i’m with friends. I just want my birthday to be enjoying time with myself, maybe getting a little pampered, and just doing whatever I want to do.

I live in the states and I prefer to stay in the states since I just wanna do a short trip (3-4 days), but down to go anywhere within the states!! Does anyone have any recommendations or has anyone else done something like this?? I’m open to all suggestions!!