Been feeling pretty down lately

I guess that now that I'm all registered and have all my classes scheduled at my new school the only thought I can focus on is what if this doesn't work out how I want it to?
I also worry that my parents are going to remain way too clingy even after I leave. They know that I want to get a bit further away from them and be more independent, but they're already talking about trying to figure out how often they're going to visit me/I them. They were saying maybe once a month which, to be honest, still sounds like a bit too much for me. Also, they were talking about what we were going to do for my birthday. My dad was saying that my birthday was on a Saturday this year, so it would be easy for us to do something on my actual birthday. Thing is this will be my 21st. I'm pretty sure I WON'T want to hang out with my parents for that -_-. Ugh I feel like a spoiled child for thinking like that but I mean, come on...College, 21st birthday...Who WOULD want to be with their parents for that?
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"The rain keeps crawling down the glass. The good times never seem to last. Close your eyes and let the thought pass."
'Prodigal' by Porcupine Tree