gameという単語について
Dear E. Jean: I used to have game. I graduated from my dream college, got my dream job, and met my dream guy. But then real life happened. I fell in love, had my heart broken, and my Devil-Wears-Prada boss completely destroyed me. My faith is shaken to the core. I don't know who I am or what I want anymore. And the guts? Gone. How do I get my game back?
My managers have treated me with great respect over the years because I'm supersharp and on my game every day—
これらのgameの意味を教えてください。よろしくお願いします