When you have kids at home with you (before they are old enough to be going to school), you are pretty much the only adult that they have any access to. Because of that singular and unique position, you are the only person in the entire world who can be a proper role model for them in what they do. Naturally, this is going to be a massive amount of responsibility for you, ultimately the rewards are totally going to be worth all of the struggles and the composure that it takes to be a great role model and example to your kids. When you keep in mind that whatever you do is what they are going to mimic and imitate (at least in the early days), it gives you a powerful incentive to really walk the line and be the best that you can be. There are a lot of ways that you can be a great role model to your kids.
The first way you can give them a great example is by keeping yourself fit and active. While a lot of people would think that this just means that you should exercise on a regular basis, it also means that you should keep your mind sharp, as well. When your kids see that you read on a regular basis, they will understand that reading is an important part of being a grown person. They may even want you to read to them, which is a great way to make them better readers and writers later on in life.
Another way that you can be a great example to your children is to work from home. Working from home allows you to spend a lot of your time with them, but without becoming a financial burden. If you can make some money without having to leave your home (so there is no eating out expense and obviously no commute), you can do a whole lot better than if you just hung out all day long doing only the occasional household chore and some yoga. Be a great example.