I think it's important to associate with positive, upbeat people.
When something good hits me, I'll use Siri to make a note so I don't forget.
You get energy from other people, so hang out with energetic people.
There are a lot of ideas I've had that I originally was quite taken with, but over time, I lost steam. They stay on my list, but between me and you, I'm probably never going to do them.
Yeah, it's a weird little niche, but by God, it's my niche.
I always have a ton of projects in mind. On my ToodleDo list, I divide projects into those I'm actively working on, those I'm not doing but believe I will do, and those that sound good, but who knows if I'll ever get to them.