Balance. Well. Now THERE is a WORD if I ever heard one.
Balance is a word we tend to use when we don't really feel like being balanced. We have something else that is distracting us, and we want to give all our energy to IT, and we let IT suck us dry... and when we are drained... we say... wow... I need to 'balance.'
Would you do the job you are doing for free? Meaning, if they weren't paying you to do it, would you still do it, with all that drive and commitment? If you say no, it isn't your passion. It is filling a void... probably an identity void.
If you say yes... then, you know when it is time to put it aside so you don't drain yourself, so you have something to continue to give to IT to continue to feed the passion.
And 'balance' isn't an issue.
The things we are passionate about don't suck us dry. They feed us. If you arrive home more energized than when you left, you've got passion.
New careers are exciting. 'New' things are exciting. Riding roller coasters are exciting.