Ahem! Just to put your mind at MORE ease.... lol....
No matter how well you do in life, there will always be times when you goof up... make mistakes.... and yes, tell lies. It happens.... and is going to happen.... you might have told lies in the past.... and you repent of that.... but that doesn't mean that you will never tell lies all your life...
YOU ARE HUMAN. To err is human. So if you can remember that you are a human being and not some sort of NEVER DO WRONG machine..... and also remember that Allah LOVES to forgive..... and that the Door of Repentance is ALWAYS wide open (meaning Allah's mercy is always there for you....) ..... then, life will be a lot more easier to deal with.
Relax brother. You are a human being.... and a Muslim... learn to take life with a pinch of salt.