Now for the bad: It's going to take a lot of patience, restraint and some careful planning to get there. That loan officer sitting across the table won't look kindly on the new Lexus you bought or the stack of credit card bills. And if you've only managed to put away $1,000 in savings by then, it'll be time to forget about the pricey beach house.

To pull the purchase off, try heeding some of the guidelines below. It may not always be fun, but doing so will help get you where you want to go.

First and foremost -- pay your bills and start saving. There is no single element that can so dramatically impact the success of an application as your credit history. Another thing, of course, is savings. You should have a good disciplined savings pattern. That's the kind of behavior that's going to make you a successful homeowner.

Here are some do's and don'ts to consider.

Five do's

1. Make loan and other debt payments on time, especially over the months leading up to the filing of your mortgage application. It sounds simple, but every 30-, 60- or 90-day delinquency on a loan or credit card is going to reduce the credit score the lender ends up considering as part of the loan file. That score, in turn, will determine how good a loan you get -- if you get one at all.

2. If something has to be missed, miss the credit card payment first, followed by the payment on any installment loan you might have and finally, the payment for an existing mortgage. That's because credit scoring systems look at the performance of similar loans first when deciding what type of score to assign. It will give the most weight to the performance of another mortgage, for example, then the performance of something like an auto loan, which features fixed payments and a fixed rate the way many mortgages do. Lastly, it would evaluate the payment performance of so-called "revolving" loans, like credit cards, which feature variable payments that fluctuate with the outstanding balance.

If you have to prioritize -- pay your mortgage loans, pay your installment loans, then pay your revolving loans.

3. Consider paying off more debt and putting down a smaller amount at closing. This leaves you with a larger mortgage, but it will allow you to replace non tax-deductible, high-interest rate debt with lower-rate mortgage debt that features deductible interest.

4. Get the mortgage first if multiple financial obligations are going to pop up in the near future. Numerous credit inquiries, such as new applications for credit cards, can hurt a borrower's credit score, especially if they're filed in the months prior to the home loan review process.

5. Increase the size of the down payment you're able to make by saving as much as possible, as often as possible. Don't put the savings into something volatile, such as an individual stock. But evaluate money market or other accounts that offer reasonable rates of return, automatic payroll deductions or other financial incentives to save.

It depends on how much you have saved already, but it's important to take a portion of each month's income and set it aside for the down payment.

While these are all good steps to follow, you have to think of what NOT to do, as well. Resisting the temptation to splurge or slip-up in the credit arena are at the top of the list.

Five don'ts

1. First off, don't make any big purchases over the next couple of months. Besides the obvious fact that it makes less money available for the down payment, it might require you to get yet another loan. A significant debt such as a $15,000 auto loan will look bad to the mortgage lender's credit scoring systems. Plus, the human underwriter won't want to see you adding a couple of hundred dollars per month to your monthly expenses.

Generally, as a rule of thumb, you want your total debt obligation to be no more than 36 percent of your gross monthly income. You certainly don't want to load up on consumer debt if you're anticipating purchasing a home.

2. Don't try shooting for that six-bedroom house by the water if it's going to be too much of a stretch in your current budget. Lenders consider what's known in the industry as "payment shock" when approving loans. Somebody who goes from a relatively small monthly housing payment to a huge one either won't qualify for a mortgage or will end up having to cover too much loan with too little money.

If you've paid all your bills on time, but you've been paying $450 in rent with a roommate and now you're going to have a $1,650 principal and interest and insurance payment on a house, it's a red flag to the underwriter.

3. Don't just get pre-qualified for a mortgage, get pre-approved. To get pre-qualified, a borrower need only submit credit, income and debt information verbally to a mortgage broker or lender. That means the resulting estimate of the maximum mortgage and home that's affordable is exactly that -- an estimate. Before you can get pre-approved, however, you must allow a lender to pull credit reports, check debt-to-income ratios and perform other underwriting steps. That puts a borrower much closer to obtaining a loan and locking in a rate and term. [Never let multiple lenders pull your credit, or your credit scores will drop. Ask for a copy of "How to Shop for a Loan" if you want further information on this.]

4. Don't forget what kind of money personality you have when getting a mortgage. By taking out a 30-year fixed rate loan rather than a 15-year mortgage and investing the money saved on monthly payments, you might earn a higher return on your money in the long run. But that approach won't work for people who spend any extra cash laying around on dinner and a movie twice a week. They can force themselves into saving and accumulating equity faster by going with the shorter term and higher payment.

5. Last but not least, don't forget that homeownership brings with it many burdens. Allow 1% of your purchase price for year for basic home maintenance. But also consider that the cost of defaulting on a loan is much greater than the penalty of missing a rent payment. Too many black marks on the financial history and it will be 23 percent interest credit card mailers that show up in the mailbox rather than the 9.9 percent ones your neighbor gets.