Think I would have to know why it went to $10. If it is just natural and nothing economically in the world has caused it, I'd probably convert about 40% to HBD and add it to my savings. And if I had no big life need for the money at the moment leave the rest as HP.
If the dollar itself is deflating so badly that Hive becomes worth $10 but the $10 is only worth $0.30 in today's value. I'd probably just leave it all as HP. Or if some other economic or global event is occurring, I'd have to wait and see.
As far as keeping it HP for life, definitely no guarantees for this. I like Hive but things like this can change overnight and even though my loyalty is pretty strong with this one (at this point it is the only crypto I really follow at all.) Never know what is going to happen.