We all lie at one point or another. The important thing here is that we know how to apologize for lying in the first place. Unfortunately, it's not always easy to attain forgiveness, especially if you lied about something big and serious.
Tip # 1: Flowers for Forgiveness
If you're a guy and you lied to a girl or, heaven forbid, your mother, flowers can help lessen the tension between the two of you. Of course, it goes without saying that this tactic is only for small lies - lies that aren't grave enough to cause severe damage in a relationship.
The flowers aren't meant to be the apology though. You still have to actually say the words "I'm sorry" and talk things through before you can earn forgiveness. Other presents such as chocolates can also do the trick.
Tip # 2: Letters for Sincerity
Another effective way to apologize for lying is through a heartfelt letter. If you can't find the courage to actually talk to the person you have wronged, a letter is the best way to go about it.
For one, you wouldn't have a problem with words, as you can revise and edit your letter before sending it out. And for another, you wouldn't have to stutter nonsense or get sidetracked in your apology as you might in a face-to-face encounter.
There is, of course, the danger of the letter not being read at all, especially if the receiver is not in the mood to hear anything from you. In this case, ask a trusted friend or relative (whom both of you know) to deliver the letter.
Tip # 3: Promises to Keep
When cornered, you might feel compelled to promise never to lie again; and while that's not a bad thing (and I don't really see any other answer you can give), you must remember to uphold this same promise when the time comes.
Of course, this doesn't always hold true especially if you only lied about something trivial. However, if you lied about something important, you must keep your promise never to lie about it again. It's all about trust.
There are various ways on how to apologize for lying, but why don't you make the effort to always tell the truth instead? Trust me. You don't want to use up all your credit. Trust is pretty hard to earn back once it's broken.