How we should select right or wrong

In teen age,we often get confused to select what is right or wrong, what should be done and what not. We chose bad area to participate and our life is done with nothing but do anything good. So before doing any activity, you need to think yourself 'can you tell your mom about this activity honestly?' If the answer comes yes then definitely you can approach to the work. But if the answer is no then the work is not for you.