Feeling stuck and unsure about your future can shake anyone's confidence. Ten years ago, I found myself in exactly that position. I was in a stable job but felt completely unconfident  and stuck in a rut  about where I was heading. I tried all the usual advice – telling myself to “think positive”  and trying to “fake it till I make it”  – yet inside I still felt like a fraud. So I decided to do something drastic: I quit my job and traveled the world for six months  in an effo