So many ideas!

I have so many ideas about completely new gameplay concepts never seen before! Each of them can be realized into a potential hit game. But as i have learned in my life ideas mean nothing without realisation.

You can have mediocre ideas and be very good at realizing thus creating a lot of value. And you can have amazing ideas but be very bad at realizing them, resulting in zero to none value at all.

Concerning realization there are two major pitfalls that i see now:
1) Actually having the motivation to start and complete the development of the game. There is an idea that an average Google Play developer publishes around 10 games before they are somewhat profitable. So, it looks like a bad idea to target profits - they can take some time to come. The best thing is to target quality and value of your products, as those two aspects are immediate - you create them yourself, and can fully control them. And profit will be just a side-effect of quality.
2) Balancing a game so that it is hard enough to provide frustrating challenge, but not so hard that it is unplayable. This is a thin line, that needs a lot of effort put in to find.(As i understand on my current level)

If the first pitfall just needs discipline and determination, with the second one you probably need to be gifted in a certain way. Take for example Flappy Bird. Put the pipes 5 pixels closer and the game becomes unplayable. Put them 5 pixels further from each other and the games becomes easier.