Mistake 1: Not solving a real problem or need
Your product must solve a real problem or satisfy a real need.
Before starting a website, try to identify what people are complaining about, what products or services they ask for but that are not available on the market.
Mistake 2: Underspending
People that underspend on their projects won't get the desired profits.
Mistake 3: Overspending
People with too much money, don't think the best solutions and usually spend their money until they run out of them.
Mistake 4: Lack of focus
Many people fail because they lack focus. If you want to create something powerful, you need to concentrate your efforts on it.
If you want to be profitable, you have to be the best on what you do.
Mistake 5: Lack of vision
Lack of vision occurs when people jump from idea to idea, from project to project until they fail in everything.
Mistake 6: Inflexibility
It is very important to not become inflexible regarding how you will achieve it.
You vision should be clear, but your strategies should be flexible.
Mistake 7: Not testing and collecting facts
Whenever you need to take decisions, evaluate them and if possible test them.