I'm a liar
What is it that you lie about?
I lie mostly about how competent I am.
You shouldn't lie about your competence. If people expect you to do a job correctly and you can't do it then they will blame you for the failure.
Fuck you, I'm going to lie about everything now.
Lying about skills you have doesn't make a lot of sense. Because they're going to find out pretty quick that you don't have that skill. Better to be honest and then succeed at what you try.