Adult Comedy. Man wants to be a stand-up comedian, so he lies about having the best show ever and becomes famous without ever doing a show. Bluffs his way in Hollywood. Read around 2010-2011.

[Eline]

I think I read it 10 years ago, so it isn't a recent publication. It's all about his dream of wanting to become a famous comedian so he bluffs his way to the top in Hollywood

[Becca]

I'm not sure if you're still looking for this, but it sounds like This Is Your Life by John O'Farrell.