A lot of people have ideas. On some level, ideas are a dime a dozen. It takes quite a bit of work to make an idea into a business. You need to understand how you’re going to build your idea, what your team needs to look like so you’re not spending money on simple things, and really most importantly how you’re going to make money (not a bad idea to have a couple options here, as not all of them work out). You need to understand who your customers are and what your product is, without that your startup is an idea, it isn’t a business.