Let me tell you about six enemies we face from within.

1. Fear

The first enemy within is fear. We are not born with courage, but neither are we born with fear. Our fears are typically brought on by our own experiences, by what someone has told us, or by what we've read in the news. Some fears are valid, like walking alone in a bad part of town at two o'clock in the morning. But once we learn to avoid that situation, we don't need to live in fear of it.

Fears, even the most basic ones, can totally destroy our ambitions. Fear can destroy fortunes. Fear can destroy relationships. Fear, if left unchecked, can destroy our lives. Fear is one of the many enemies lurking inside us.