I feel like I have no choice?

I'm stuck. it seems in my life I have no choice about what I want to do with my life. I'm 18 by the way. but I'm currently looking for a job. I've already tried the manual labor type jobs and I HATE THEM!!! (ie landscaping) and I told my parents how much I hate that type of work and I made it VERY clear!! yet they continue to push me to go out and get a labor intensive job that I CLEARLY don't want. and every time I say I don't want to, they just get mad at me. I understand the economy is going down the tubes and I need to look for work, but GOD!! am I not aloud to work where I want??? I feel like my parents just want me to work where they want me too. and I HAAATE that. please help me. it's getting to the point where I don't know what to do. tell me what you think.