I do not believe this to be true. And frankly, it sounds like a lovely way to drive oneself crazy.
I am not 24/7. To be brutally honest - I did 21 years of marriage. I have no interest in catering to the every whim of a man again on a daily basis.
I have an intense, satisfying D/s relationship with a Dom who I see on a regular basis for a few days at a time. This works for both of us. Outside of that, we chat regularly and have a good friendship.
Do not let anyone tell you that the only 'good' submissive is a 24/7 slave. That the only 'real' BDSMers are the ones who are "on" all the time. That is crap. Whatever level of D/s and/or S/M you want in your life is perfect - for you.