I need advice, HS Sophomore, need to get on the right track when I can [aiming for military career, MA resident, 3.8 GPA]

I did re-read it. I’ve been reading more into it and I realized I should keep my high grades but mainly work on sat prep and psat aswell as some sort of “passion project”. It seems disingenuous to make one just for admissions but I’m sure something genuine will come along at some point.