I often see people split into two camps. On one hand those who almost ignore competitors in their business plan, because they do not want to think about the issue yet and feel so confident they have a great idea for the market regardless. But I recommend not being overconfident when it comes to competitors. They are still there for a reason, they are still around and in business for a reason, so view them with that in mind.
Next you will need to carefully examine what actually goes into your offering. How many hours does it take to create those one_of_a_kind bracelets? How much does it cost to bake a dozen of your special recipe cookies? How much research goes into "whipping up" a website? Making tangible goods requires space. Do you have room to grow enough squash to actually generate profits? Are these numbers you could sustain beyond the occasional personal or family use of your product or service? The business planning process can be very helpful to "accidental entrepreneurs" as it allows you to decide which ideas are best left as hobbies and which ones could provide some real cash flow.