Iam 29 years and jobless. i dont know what i want is that normal?

my carrer and life rocketd way back when i was just 19 but i couldnt fulfill my dreams. And since, my life has come to a standstill and i am sitting at home doing nothing for th last 4 years. I dont have much friends and do dwell ovr the things i had and missing. I am not sur if i am still young to start again and if so then what can a man my age (29) do?? Is there anyone else too who would be like me thinking of starting something. All my friends are having a career and i feel shy to speak to them. What are my options? I am finanacially ok but then i feel misreble to seek help. is it normal to think that i have made a mistake and should work on overcoming this thoughts. I feel that all of my friends have gone very far and iam alone.