The word control has a lot of negative connotations. Control freak is quite an insult! To be controlling is almost verging on evil....but being in control of your own life is surely a desirable state.
I must think of a better expression, one without the negativity. What about relaxed mastery? In command, in charge..(have been looking in the Thesaurus).
I remember saying to my speeding brain once 'Just a minute, I'm in charge here.'
It's a nice feeling. Comfortable in one's skin comes close to describing it.
Are you bien dans sa peau?
Am staying up hoping to see the Northern Lights.....