"You can't be right by doing wrong; you can't be wrong by doing right"            - Thomas S. Monson - 

- Sometimes you have to lie for the right reasons but when you lie to cover something you did wrong, you feel guilty. When you think what you did is right but you know it's wrong at the same time. You shouldn't do it cause it can lead to a consequence. Sometimes those consequence will not always be something you can turn back or work your way out of there. 
When you do the right thing but people tell you you're wrong believe in what are your reasons. If you think it's the right thing to do, go for it don't hesitate, meaning you're not being sure with yourself.