Do not be society cautious. This means, you should not be bothered about people's opinion,what they think or say about you. Do what you love to do. Do not lean on people's choices. If you would think what people will think if I do this, then I am sorry, but you will make yourself a person who would not be you any more. Just remember, people have to say anyhow, no matter how hard you try to convince them with your choices. They will complain, no matter what. Look at this following picture, you will get an idea.
 Don’t worry about what others are doing. “Success” is not one size fits all. Figure out what makes you happy, and then find a way to do it. 
Keep a clear picture of your goals - write them down and revise on it everyday.
2. Let go of any sort of prejudice.
3. Stop doing what other people (family, relatives, friends etc.) expect from you.
Do anything you really want to do in your lifetime!
Don't wait!