Having children are one of the best ways you can guarantee that your life is going to change. Your priorities will shift from the way you spend your time to how you manage your money. You need to be ready to make those changes before you have your first child. It helps to have a solid financial plan in place before you begin, but you can set one up now if you haven't already. Your financial plan should include things like your retirement and your child's education.
You should also be ready to pay for things like childcare. Your child will get more expensive as she gets older. You need to be ready to adjust your spending and work out the priorities of how you spend your money in relation to your child now. You may also be considering staying home while your kids are young. No matter what you decide you should be prepared to make changes to your plan along the way.