I've had this experience over the last few months. The reason, at least in my case, is that I've started applying a lot more filters on the ideas, and have stop

I've had this experience over the last few months. The reason, at least in my case, is that I've started applying a lot more filters on the ideas, and have stopped considering any of them as 'weekend ideas' (specially if it's a possible business idea). Most of my ideas fail on one of these two questions: 1) If the idea is 'revolutionary' (Eg: Go to Mars) --> Why has nobody been able to implement it till date? Can I do it? Am I willing to spend the months and years required for it? 2) If it's already an established market/in-use idea (Eg: Uber for X, Groupon/FB/Amazon clones) --> What will we do differently? If it involves some kind of services, can I guarantee and deliver them on time and am I willing to put myself under that stress? So, for the last couple of months I've been focusing more on just reading and understanding things, coming up with ideas and rejecting them. Hopefully someday an idea will come that does pass these filters or something that I would be willing to stick with for more than a month...