Well preferably I get a plan in place as soon as I (or my wife) realise I am hypomanic and on an upward progression, before the real damage starts happening.
That is the time to hand over the car keys, credit card, and get my pdoc involved with drug review and levels testing.
I keep some antipsychotics in the house for an emergency like that. They subdue me quite quickly. The only problem is I hate taking them.