'Going for it' is probably the most liberating thing you can do.
The path to implementation stems from a desire to leave a mark on the world and to create a positive net benefit for others. Not just to spin thoughts in your head, but to go out there and make something that has never been created. You may create something similar to things already out there, but your creation is yours.
This doesn't particularly mean your creation is about you, or for your own personal benefit... it means that you have contributed to the big pool of creativity.
You have shared something that may inspire another person to create... and this is the biggest gift of all (IMHO).
Action feels incredible regardless if it 'fails' or succeeds. Market research, monetary potential, and other factors can be vital to your success, but I say don't let these things slow you down in making something happen.