Lying is something people do for many reasons.

I tend to think that people who do it habitually compounding lies on lies do it because the rush they feel when they do it feeds some need.

It is self destructive so there may be and element of that. I also think some of it is and hatered for authority that has stolen something from the liar. Most liars I know live in a chronically untrue situation such as a family where one parent cheats on the other. Or there is hidden addictions or abuse.

Therapy is a good idea but it only works if you are really wanting a change and not just more attention. You might be addiction to the attention since I doubt this is a new problem.

The really sad part of lying is eventually it makes you loose everyone and everything that is important to you. If you haven't hit bottom you will.

i'd offer advice, or comment, but i'm guessing that you're lying about this statement too.