Quote from TraderZero:
I rebalance my trading account to a set dollar amount every 2 to 3 weeks. From the amount I've pulled out, a set amount is considered "salary" and goes into my checking/savings accounts to cover everyday bills/expenses (mortgage, cars, etc, etc, etc), the balance goes into another investment account and is invested relatively safely. The investment account funds serve to cover taxes, any potential margin calls on my trading account (none yet, knock on wood), and general long term savings strategies.
Been running my accounts this way for nearly 3 years. Have switched brokers several times, but keep the same general strategy with respect to funds management.