Who am I

I just can't convince myself that I am cut out for sales role.Does it means I am a weakling if I can't handle the pressure? How does a person measure whether is he weak or whether he is cut out for the job? I seriously do not know.Running for so long, and struggled, but in the end, I do not know whether I am destined to be in sales.What should I do next? Time is clicking and it won't wait for anyone.Pressure is getting stronger..I feel like a lost soul.I don't have a strong sense of direction on where I should head to. Does everyone goes through this stage? Or am I too demanding on what I really like or want?Really hope I can get things cleared out and just head for the right direction in my career.