You have to make a choice. You say you love to sing and sing your heart out. This has not much to do with being a famous teen singer on tv. The harsh truth is that being a famous teen singer on tv means having a certain look - that means sex appeal. You'll be told what to wear, how to look, dance, etc. You will have producers and writers who will write all your songs and tell you how to sing them. If you can't they will find a vocalist to come in and sing it for you. THen when you "perform" you will lip sync to a cd or dat machine.
As you become more "famous" you may begin to think that your fans "love" you for you. You may wish to write your own songs or sing live for real. Your managers, producers, etc will all advise against it. You'll become depressed. The love you have for singing will become a faint memory that you long to experience again. You may succumb to drugs to escape.
Such is the "life" of a famous teen singer.
However, should you continue to sing your heart out and strive to be the best vocalist you can possibly be, the possibilities and opportunities for you will be endless. Maybe it will be you who will be called in to sing in the studio for the next "famous teen singer"