I am in the same phase, i have 1 idea which "I" think is good one but not sure if there is really need for that. So i am basically putting my efforts without keeping much expectations from it but giving my 100%. You have to try it to find out if its successful, idea may be great but implementation of it will decide the success. Keep on looking for inspirations, i came across site where they are selling tickets to marriages, i mean really? i visited the site and there were listing available.

So try it and find out yourself, worst case it wont be hit/successful but by that time you would have learned so many things.

Do your sales before building it. Who would buy it? Make a powerpoint or pen&paper mockup, get feedback from potential customers. Build a landing page, track conversion to a 'Buy Now' button.

For more info, check out 4H work week, Lean Startup, or http://firstround.com/review/90-of-feedback-is-crap-how-to-f...

Road test your new business idea > https://www.goodreads.com/book/show/1194905.The_new_business...