I can't tell if I'm touching the right points here, so just sharing a couple of thoughts: Ideas are exciting, especially in the beginning. When you decide to w

I can't tell if I'm touching the right points here, so just sharing a couple of thoughts: Ideas are exciting, especially in the beginning. When you decide to work on a product, you are giving up on an endless amount of new (read: temporarily more exciting) ideas that come up to you as a creative person. This is a tough choice to be made, have you made this choice? What does success look like to you? Is it the ability to work on what you like? If so, any kind of commitment to work on one product is going to be a difficult. Also, you mentioned second guessing due to competition. You may notice that in any field there are many products which seem, like you said, "closely related". Thats because they only look similar from the outside. In reality they have something different about each of them, something significant enough for their makers and for the market. For example, they may be focusing on different aspect of the same problem or may be targeted at a different stakeholder or reach the same customers in a different way. Learning to find this differentiation in existing products might help you see more clearly where your product is unique.