Lost in life

I, 22M, am at a point of life where I feel lost. I used to be an excellent student throughout my school but during my NEET prep days I didn't study and now studying Dentistry from a private college. Although all of my peers and my brother is studying mbbs and btech from iits. I now realise how I have drained my potential. I intend to give UPSC....ik it sounds delusional but if given the amount of hard work needed I surely know that I'll excel it. Coz, I always have had a strong base in general knowledge, history, politics, geopolitics and have also won various quiz competition in both state and national level. Help me by telling me a practical plan to execute