There is much about engineering that requires engineering, but it also requires rigorous math and science education, especially physics. I like to compare engineering to puzzle solving. Another good analogy is inventing.
So if you are good in math and science, and are on track to finish at least pre-calc (preferably calculus) and will take biology, chemistry and physics by the end of high school, mechanical engineering might be a good fit for you. Best wishes as you continue your education.