Simple realizations are what creates progress in a life. The thought below is not earth shattering. In fact, it has been around for millenia (probably). Yet, not until you fully understand and live it has it the power to give you an "aha effect".
Just do it!
It's quite amazing the progress that can be achieved by just doing stuff, rather than thinking about it.
Futhermore, "flow" can only be achieved in the process of actually performing a task.
Therefore, just do, focus on what you do, and don't think about what else or where else you could be.