Everyone talks about confidence an awful lot. Confidence really is just your degree of certainty about an outcome or about how you’ll behave or feel in a given situation – it’s your degree of certainty.

It’s useful to look at confidence on the following four levels:

1. What You Know You Can’t Do

It’s possible that you might not set a big enough goal because you may have too many doubts. You might think you’ll never get there, or you don’t want the disappointment if it doesn’t work out. But if you don’t set a big enough goal, it won’t be attractive enough to pursue. Setting a big enough goal is covered later.

So, the bottom level is “What you know you can’t do.” Essentially, 99% of the things you say you can’t do are the ...

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