There's a saying: if you want something done, ask a busy person to do it. Another way to think about it: If you want to get something done, become a busy person. Don't empty your schedule, fill it. The busier you are, the less time you have to get in your own way…
I stopped trying so hard. I stopped trying to be funny, smart, clever, or creative. I stopped trying to talk about the three most important things. I stopped trying to make this my best talk ever. Instead, I set a goal I knew I could achieve: talk about one thing — not necessarily the thing, just something that was meaningful to me — and talk about it simply and passionately.
Life is a process and while one stellar moment — be it a success or a failure — can make a difference, it's far more likely that the steady production of many adequate moments over a significant period of time will make a much bigger difference.