I freak out about things all the time such as close calls while driving, taking college tests, and work life. But I feel like all these things fall under regular anxiety but at the same time, sometimes I'll spend all day in bed thinking and planning worse case scenarios. 

From my point of view, I don't want to go to a mental health professional and be officially diagnosed with "anxiety" in a clinical setting.  I feel like i might use it as an excuse from seeking out challenges in life. In other words if I found out i have clinical anxiety, I might tell myself "well I have anxiety, so I shouldn't even try. Might as well choose the safest life possible". I know anxiety isn't a thing where you take a pill and get surgery and make it go away. 

In some ways, having anxiety does benefit my life, where it encourages me to prepare and plan as much as possible for bad things which might happen. And of course, anxiety is detrimental where I feel scared and cannot multi-task. 

Back to the OP question, Is it better to not  know about having diagnosed clinical anxiety? I don't know too much about mental health from the professional side.