Know To Flow

Let's talk flow state. 
Lately, my mind has been occupied by random pondering on the concept of flow.
When do I flow? How do I know I flow? What does it feel like to flow? What blows the flow state? Why is one person's flow state, is another person's horror state!? 

Some people describe flow state as an altered state.
Here's my attempt in describing it: Time seems to function differently, focus is intensified and the brain is centered only on the task at hand, without rigidity but rather with a 'flowy glowy' state. Clearly, I am no Shakespeare in describing this - and that's possibly due to the mystery surrounding something as vague as a flow state - but I live in this state for at least some moments every day. So consider this an anecdotal description...

Sometimes I am lucky enough to be in a flow state for an entire day without a break. Sometimes I'll have flow phases in my life when I am in the state constantly in a low dose. 
As an actor - I've felt the concept of 'time stopping' and me not knowing what I was doing but rather have my art form 'do me' instead of 'I do it' several times in my life.
Once on stage, I was do deeply immersed in the zone - that I literally felt like I was flying on stage and had the audience breaths in the palms of my hands. 
As a writer, I found myself many times so deeply entrenched in my writing, that I would look up many hours later and see nighttime has arrived with me completely losing track of time. 
The moment of stepping out of the 'zone' is a surreal moment. Much like waking up from a dream... that tiny millisecond in between being asleep and awake. 

In a way, inviting more flow states is taking control of the clock. 
And when we really know what happens when we flow - what it feels like, when it happens more freely, and what drifts us away from flow - we can invite more flow into our lives and maybe even do the impossible: stop time.