If you're only thinking of 'making money', then you probably won't make much. After all how much money is that exactly?
Once you get clear on how much you would like to make, ask yourself, "does this motivate me to do what it takes to earn it?"
Chances are it doesn't. So you must have a real definitive purpose, a reason that drives you to move forward.
For example, "I'm absolutely tired of working 9-5 and I want a way out". And if this is really that important to you, then list all the reasons why you want out. Get super clear on why you want out. As you get clear on what you don't want, you'll get even clearer on what you DO want.
So what is it that you want if you don't like your current circumstances?
The more reasons you list, the more clarity you bring to your sense of purpose.
In other words, take the time to write out all of this, and you'll see that your purpose will begin to take shape with greater clarity.