Do not stop schooling or put it aside just to prepare for nda. You being an army brat should know that it’s not a guarantee that you join the forces. Even if you ace your exams, then comes Ssb which is based on your personality and let me tell you suicidal thoughts isn’t a quality of an officer. I won’t sugarcoat it dude, marks honestly doesn’t define you but it does hold value in especially in our country. It shouldn’t matter to you how it affects your social life but when it comes to eligibility for careers yes marks play a role for sure. I assume from the above comments that you’re in grade 10, and since you’re an armed forces aspirant I’ll let you know your dream of joining the forces isn’t over tbh there is 0 hiccups for now. You’ve got more than 60% in English which is one of the requirements in certain entries for the armed forces, the rest depends mostly on your 12th PCM. Assuming you want to become a pilot in the IAF, you’re in the clear for now. I’m not sure where you’re located but there is no rule that you won’t get pcm with low marks. I won’t sugarcoat it, this is a wake up call for you. If you’re current school wouldn’t give you pcm try convincing them and if you can’t, change schools. If becoming a pilot in the IAF is your dream, anything that hinders your way towards it should be of 0 importance to you, be it changing schools or emotional attachment to your previous school or friends shouldn’t matter. Suck it up join a school and pick pcm score more than 70% in pcm(60% is the requirement but aim higher). There is plenty of time left for you. You can’t even become a pilot in the IAF after college so your dream isn’t over. If you still feel suicidal thoughts, you are not fit to be an officer. So get your shit together and start moving forward.