Keep a record of your accomplishments and contributions from day one, including emails thanking you for your work, performance reports, and all positive feedback. When it's time for your performance review, if you're seeking promotion or negotiating a pay rise, you'll wish you had done it. So start now!
Solitary confinement. It has to be one of the worst punishments, even for hardened criminals. There is even a movement right now to reduce or eradicate it from our prison system because of its terrible effects. Regardless of your background, we each need people around us to spur us on, encourage us, and sometimes even keep us sane.
I left that workforce because being in it bored me, depressed me, and made me chronically tired and angry. Ignore your bliss and you will have symptoms. Why? Because it's the intrinsic, innermost you trying to get your attention. Don't keep doing this, it insists, raising its voice until your body aches with it.