Emotions- need advice

I’m 21 and currently in college. I’m going on to my second year of college and ever since starting I literally can not stop thinking about my future. Which is a good/bad thing. I have my whole house planned, wedding planned, even down to a playlist I want my baby to listen to. I’m not in a relationship right now but every person I get close to I seem to only think about the future with us. I need some advice to help me stop over thing and stop thinking so far ahead.