How to not forget lies you tell

I'll agree with anybody, one should never tell lies. Actually I don't, for a couple of reasons mainly.
Firstly because I don't want to manipulate the reality, it's complex enough and time is running out so fast that I don't see a clear advantage in it. I think one should try to contribute to social development by telling things as they are.
And secondly, because I don't think it's a good thing living with the feeling of being discovered. I should always take care not to contradict myself, and this would be really uncomfortable.

Anyway, yesterday I was reading the description of a character taken from "East of Eden", Cathy. The writer suggest that Cathy employed three techniques to tell lies; here they are

1. Stay close enough to the truth so that one can never know
   This way I understand you can blend reality to make it appear the way you need; by emphasizing certain ideas or belittle others. Once you find someone questioning your statements, you can always fix everything with a misunderstanding.
2. Interlard lies with true statements
   This way you will probably reinforce your contribution by playing with well-known ideas, so that trust on what you say is somehow established.
3. Tell a truth as if it were a lie
   This is part of the whole strategy to make yourself credible. If you want to set a precedent, follow this step. Once your statement is called into question, make sure you have all the resources to demonstrate its truthfulness. This will provide you some degrees of liberty and for a long time, when you'll need to say:
   —I told you, you never believe me. Just like that time when...

I hope you found this tips interesting. Lies are evil, but I admit that from time to time, a "technical small lie" can save you time and probably your face!