When you talk to old people, they will tell you their life story. When the conversation starts with "I wish I would," that is really scary. When you see regret in their eyes, that's the most scary thing I find in life.
Old people are running out of time. They wish they would do something, but they did not do that when they had time. Now they are doing nothing but regret. Regret in life is the most painful thing ever and it is going to kill you inside.
If you are young, you have time. That is the biggest advantage that you have. So, listen to yourself. Don't listen to other people and live your life that is set by others. In the eyes of society, you will be successful, but deep down you know what you always wanted to do. If you do not do that because you value others opinion more than yours, you are going to regret later.
If you have a dream, and you want to do something, just go and do it. Don't let anything holds you back. Believe in yourself. People might say different things in front of you or behind your back. When they realize you are doing a great job, they are the ones who come forward and appreciate you.