Impossible Goal

I need help with my impossible goal. Right now I’m at $30k revenue. Originally I was thinking of making my goal $100k. But it doesn’t really seem impossible? I can see that if I worked more, made more offers, etc I could get there as lots of other people in my industry do. BUT, growing from $30k to $100k seems way more reasonable than trying to make the goal even higher? How do you know what’s impossible to you?