I'd strongly recommend treating windfalls like any other earned income. Hopefully you already have a plan for how you invest your money (maybe, hopefully, even an IPS?). Keep doing that. Definitely do nothing (as Frankies Girl suggested) for several months while you adjust to this 6-figure increase... but your financial goals shouldn't change.
There's likely ways you can further reduce your taxable burden this year, like maxing out tax-advantaged accounts on earned income.