The common mistake we all attempt as a teenager is choosing a profession in which we lack interest. The lack of interest is not only the cause of failure but it also disturbs you mentally.
Many times parents force you to choose the profession which is not suitable for you. You need to be determined in such case. Just make them clear how much important your profession is for you. Show them how much keen you are in adopting a profession which attracts you and suits you. If you will not put your efforts in choosing a right profession then your one wrong decision may ruin your whole life.
As a student many times we also get confused in choosing a right career. We think our profession will not give us better status in life. We might think that the profession of our interest will not allow us to enjoy a better financial status.
Just make one thing clear that every profession is respectable and at the end of the day the only thing which matters is not your wealth but how much life you enjoyed!