It's very possible to create a product in less than a week and many people can create products in a day or less. You will need to
1: Stop being distracted and get your shit together. This means you need to be in the right mindset. this goes for everything as mindset is key to achieving anything in life in my opinion.
2: Find an exact solution to a problem that is faced by many people that they pay for daily. If you have trouble with finding this it's because you aren't trying hard enough. Look at forums, amazon, etc.
3: Create some type of buzz or longing for the product. People need to know it's out there or that it's about to be out there.
4: Launch the damn thing. $$$$$$
Obviously a lot more goes into it but those are four very short tips to put people in the right direction