My overriding priority in most times is getting stuff to "DONE". Stopping 90% of the way, being forced to pick it up weeks or months later, is such a huge waste

My overriding priority in most times is getting stuff to "DONE". Stopping 90% of the way, being forced to pick it up weeks or months later, is such a huge waste of momentum. It'll take twice as long, and hugely demoralizing... and the context switching just compounds the lack of progress. Whenever I have a new idea, instead of working on it I write it down. Then I write down anything that's not done yet that I could work on. Usually picking what's closest to done. This also only works if you scope your tasks to a reasonable size, and they're not huge open-ended projects. In that case, you'll never get to a sense of "done."