Using HGTV's home design software - or software from other companies that offer similar options - you can plan your new house (or your remodeling) right down to the layout of your furniture. That's a great way to move forward on the new house you want or the remodeling of the house you already live in. You can also use it to plan how you want to decorate and change the house you have now, simply by rearranging the furniture, adding to it with new purchases, or taking some of it away.
Some people pay hundreds of dollars to have someone else tell them what kind of furniture and accessories to buy and where they should place those pieces for maximum effect. The problem with that is the designer is the one with the opinion that gets used, and the person who lives in the home often doesn't have much say in where things are put. It seems much more logical that the person who lives there should be the one to choose where things are placed in the home, according to his or her own taste.
If you want to make your own decisions when it comes to your furniture layout, you can get home design & décor software that will let you move things around, change things, and keep adjusting things until you feel like you have your home furniture layout just the way you want it. Then you can see about rearranging the actual furniture in your home, and you'll know whether you want to use the pieces you have, get all new ones, or simply replace a few of them.
You'll also be able to see how the arrangement would look without being required to move a lot of heavy furniture around and then move it back (or somewhere else) if you don't like where you've moved it to. That can quickly become annoying, and can result in aggravation, fatigue, and injury. Plus, you could damage the floor, walls, and/or furniture if you're not careful with what you're doing. Moving furniture and changing the layout virtually is much easier and less stressful.
Of course, it's not the same on the screen of a computer as it is in real life, so you won't get quite the same effect that you would get if you actually moved the furniture and could look at the room. However, trying the home décor & design program first is a great way to experiment if you really aren't sure what you want to do when it comes to rearranging what you already have. It's also a great way to save yourself a lot of money.
There are designers who will help you, but they change quite a lot per hour. If you can design things yourself, you can spend the money that you would have spent on a designer on the new furnishing and decorations you want in your home. That's a much better and longer-lasting investment.