Ask HN: Organizing business notes and thoughts?

I'm struggling to manage and keep track of various ideas/methods to implement in my day to day to work. I get flashes of inspiration, read marketing blogs online, etc and say "Oh yes, I should try this" to myself. From there I email myself and figure I'll get around to it eventually. I don't and I'm struggling to manage my ideas and find time to implement. Has anyone faced similar issues?