I think it's a good way and the right way. 

Or

>> I think it's the most efficient approach.

Because I think conscience is a very important value for humans.

OR

>> In my opinion, it is a fundamental value for humans.

If you listen to your conscience, you will have many advantages.

OR

>> You'll benefit from it when you listen to your conscience.

First, you will know the moral and correct standards. 

OR

>> First, it will give you the wisdom about ethical norms.

And you will grow into a moral, correct, and good person according to the standards you have learned.

OR

>> And it will bring you up to the righteous moral conduct based on the standards.

Since conscience is the standard of goodness that one thinks, a person will make and learn the value of conscience by listening to it.

Or

>> A person will develop and learn the importance of conscience by listening to it, as conscience is the benchmark of goodness that one believes in.

If that standard is made, a person will grow into a right person.

>> If that standard is made, a person will grow in righteousness.

Second, it will free you from the anxiety you had.

>> Second, it will free you from the anxiety you have.

 Also, you'll be out of the worst result you've ever imagined.

OR

>> You'll also be able to avoid the worst possible outcome.

For example, you're hiding a very important fact by lying. You imagine every moment of anxiety and nightmares facing the worst.

OR

>> For instance, you're lying to conceal an important truth. You picture yourself in the worst possible situations, experiencing anxiety and nightmares.

But if you listen to your conscience and confess the truth, someone will blame you and get angry, but that will only be for a wile.

>> But if you listen to your conscience and confess the truth, someone will blame you and get angry, but that will only be for a while.

 Every moment of anxiety will disappear and you will stop contemplating hundreds or thousands of times.

Maybe you'll encounter a lucky result where you don't have to avoid or face the worst you can imagine

>> Correct