I am posting, because I'm looking for some feedback from more experienced and knowledgable posters who can let me know if I'm on the right track. I've always wanted to be a mechanical engineer and try to find ways to make machinery more energy efficient (ex: assembly machines at a GM plant). I throughly enjoy Physics, Chemistry, and Math. I usually do very well in the math components of Physics and Chemistry, but I struggle on the theory component (it's simply a matter putting more time into it). Right now, I'm 23 years old, I work in the public sector making and average income, pension + benefits etc. I'm REALLY considering going back to school for Engineering, because I think it will be more intellectually challenging and fulfilling at the same time. I am currently courses to refresh my memory on mathematical and scientific concepts, as I have forgotten them from not using them in the past few years. I am also doing very well in the courses simply because I am interested in the course materials and don't mind putting the time into it. Basically, I would like to know from people (who may have experienced a similar situation or who work in Engineering) if this is a worthwhile endeavour?