What you did in middle school won't have an effect on your career.
Sign up for classes that involve using the programs AutoCAD, Solidworks, or Autodesk Revit, Chief Architect, or ProEngineer ... or a class that is about drafting. I know when I went to a "regular high school" [my freshmen year] they had Computer Aided Drafting classes, if your school offers those then sign up. It might also help, and this is just by personal experience, to switch to a technical high school, if your state has them and take the Drafting/Computer Aided Drafting/Architecture classes there. I did this, switched the summer of freshmen and sophomore year, because I knew what I wanted to do with my life and knew that regular high school drafting classes won't give me the edge [no offense to regular high school classes, but we spend half the year in just drafting then the other in just academics, so we sort of have a lead on you].
Either option, make sure you become friends with your teacher, because you don't know what type of connections they may have. I have been in the engineering industry since I was fifteen because my drafting teacher was able to get me a job in industry. I worked for the place for a year, until my drafting teacher was able to get me a job at Goodrich, worldwide leader in aerospace products.
I have had the job title of "Mechanical Engineer" since I was sixteen, which is unheard of usually, since you usually have to have a college degree for this type of job. I'm now eighteen and working Goodrich, a job that my engineers at my old job weren't able to get hired for.
Basically, get as much experience as you can early and get your name out there. Make sure you go to college, as all the other posts have said.
