I am a spoilt brat

I am about to get 19 now . I am living in my parents house . Since 15 I never went out of my house , never made any friends . I kept winning why am I so weak as compared to others , I never tried to work hard on myself . All the time I wasted on watching phone whereas my parents kept working hard to earn money but all the timei was in my bed watching garbage infomation . I am such a whinner . Parents spent fo much hard money on me but I never worked hard . Now I am supposed to go to coaching but I am bunking it . Wasting lakhs of parents . Now entrance exam is near . There is no hope is left . I want to change myself . Is it late . Have i done a sin .