New job?

I got a phone interview today but I'm already starting to freak out. I honestly don't want a new job. It's just too much change. I have this irrational fear that I won't be able to work on my stories, my blog, or work on getting into game design. Every time I get a new job I hear "Yep...this is it. My life is over. Might as well enjoy it because there's no where else to go after this." My parents have told me over and over that a job doesn't mean I'll be employed in the company for the rest of my life, but what if I am? I don't think I have the motivation to seek out another job. I don't even want to work full time. Part time would be perfect. I just want to...enjoy my life. I want to play games, have plenty of down time, write every once and a while and make connections with people who share my interests. I always say that but I think what I'm worried about is how the job will affect my life. Writing this didn't help as much as I thought it would so I'm going to end it. Wish me luck I suppose.