1 Time. You just haven't got enough time to get everything done, never mind the most important things. You can plan your time and you can use your time efficiently. But it will never be perfect. There will always be a problem with time in growing a business. There's always something else or things you would very much like to do if you had enough time. This is a good thing. You don't waste your time on unnecessary things if you're focused. You don't look for perfection with every action or product. Getting it done is good enough. Also, you often have to do things fast which is even better. This is because you fail faster and the more you fail, the more you learn. So, the more you can use your time better.

2 Money. You haven't got enough money to get your business started or maybe to develop it once it's started. This is helping you. Frugality is a lost virtue. The less waste you have the more to spend on the really vital stuff. It's amazing how many very rich entrepreneurs maintain as cheap premises as they can. It's also good in that it means you'll have to learn things without just being able to buy them in. Once you've done something yourself, when you can buy someone in, you know what you want them to do.

3 Market. There are limitations in every market which might be by price, quality, speed, support or whatever. In internet marketing it seems like just about everything has been tried in some form or other. Yet you have to overcome the competition by being unique or original where you can be. This now usually means by quality and value to the customer. The customer wants to know they will be able to do something with a product to get results or will learn more to improve their business. If your product or service doesn't achieve these then it'll quickly be sidelined.