I used to worry a lot about all sort of things. Especially in my early and mid twenties I had periods of extreme worrying, most of them related to work. When I look back at all those worries they now seem very insignificant, hardly worth the effort to think about them. Still they kept me awake for many nights.
As a life coach and someone who is genuinely interested in people I have learned to listen and to observe. I look at how people behave, how they move, how they breathe, what their facial expressions are and listen to what they have to say. You can learn a lot by observing and listening to how people speak.