The great unknown.

Uncertainty is something that most of us have to deal with regularly. It's one of the things that makes life so interesting, and it's also one of the things that can make life feel overwhelming and stressful.

The thing is, though, how much uncertainty you can handle without sacrificing your quality of life is directly correlated with how much you trust yourself. If you're confident in who you are and what you believe in—and if you're comfortable with taking risks—then the amount of uncertainty in your life will feel less threatening and more exciting.