Don't worry about those who talk behind your back. They're behind you for a reason...DUDE, YOU'RE A FAN!

People will lie, gossip, and talk behind your back. Humans have always done this and probably always will; that is part of human nature. 
Only those who have disciplined themselves to be self-controlled and honorable can be trusted not to talk behind your back; with others, you should expect it.

When this happens to you, and it will happen to you, don't worry about it. They are talking about you behind your back because they are behind you. 
They are jealous of where you are, 
and either want to be you or want to bring you down to their level, 
which is much, much lower than you want to be, I can assure you. 

People like this give no thought to honor or to what's right; they simply take pleasure in malice and have nothing better to do with their small lives.

Just keep on doing your thing and living life your way. You don't have time to waste with people like that. If they are supposed to be your friends, remove them from your life. 

If they are family, have little to do with them. 

If they are strangers, ignore them completely.

They are talking behind your back because they do not have the courage, character, or the honor to say what they are saying to your face. 

These are not the kind of people you want to spend your time with, just move on, knowing that they will probably always be behind you, and will probably always be talking from back there where their ilk resides. 

Don't let these bored, malcontented, small people change who you are or cause you to lose sight of your overall objectives;
live your life, you way - period.

ps/smoh