Other have said "living" and "existing" and I relate. A day doesn't go by where I don't pummel myself for being a failure at life, while comparing myself to the rest of the world and people my age who have families, kids, jobs etc. All the things I OUGHTA have at my age. I even look at kids and think: "Don't worry kiddo, you're gonna be just fine. You're gonna have a future for sure, because it takes a failure of astronomical proportions to be as bad at life as me". It's like life is this game that comes natural to everyone else. Everyone else has figured out the secret sauce. They get educated, they get a job, they go out and find a cute girl to fall in love with, they have kids, they establish a healthy family life etc ect ... and then there's me. An example of the straight opposite.
Other than that, I'm bad at math, could never figure it out. I also never learned whistling with my fingers. In Danish we call whistling with just your mouth "fløjte" and with your fingers "pifte", I don't know if English has the same distinction.