Flint W.’s Answer
Wow, what a question! That's quite the run-on you've got going there, so I'll try to keep my answer general and touch as many bases as possible, and if need be you can keep pressing me after that, OK?
First of all, an engineering degree is very math and science intensive, and compared to other degrees like elementary education, business, or visual art yes, it is relatively difficult. However, don't let difficulty scare you away from pursuing a career in engineering! It's a very worthwhile, rewarding, lucrative, and enjoyable career path. For you (as a 12 year old student), I'd say mind your math and science grades and make sure to study hard, the competition at the college level is tough, and it only gets tougher once you start looking for a career after college.
There are many types of engineers, so no matter what you're interested in there's a good chance that you'll be able to find a discipline of engineering that tickles your fancy! A few common engineering disciplines are as follows: Mechanical, Chemical, Aerospace, Civil, Petroleum, Industrial, etc. Within each discipline there are many types of jobs and paths one can take following college, for example I majored in Petroleum Engineering in college, and after school was presented with three different career paths: Drilling Engineering, Production Engineering, and Reservoir Engineering. I chose Reservoir because of my specific tastes and proficiencies, and as you get older you will get a better and better idea of what you want to do and what you are good at.
There are a lot of youth programs in most major cities that provide very worthwhile experience for aspiring engineers such as yourself! Just get permission from your parents to get online and look up things like science camp, math camp, space camp, etc. A quick web search is sure to turn up some results that will interest you.
I hope this helps a bit! Please don't hesitate to ask further questions! Always ask questions and always keep learning!
All the best, Flint Beard