An inventor is simply a fellow who doesn't take his education too seriously. — Charles F. Kettering. American inventor, engineer and businessman (1876–1958) Invention
Every great improvement has come after repeated failure. Virtually nothing comes out right the first time. Failures, repeated failures, are the posts on the road to achievement.
Keep on going and the chances are you will stumble on something, perhaps when you are least expecting it. I have never heard of anyone stumbling on something sitting down.