When the train of thought runs out of steam, and you're running on fumes, you may need a better fuel. The one you're using may be too much of a polluter and you need a cleaner alternative. And one that packs more of a punch.
When your thought stream hits an unexpected dam, don't let yourself get flooded. Find a new course. The water always seems to find a way. No sense in backing up.
But sometimes a flood is inevitable and it will come if a way isn't quickly found. Just keep your head above water and eventually you'll find safety.
Droughts and floods are inevitabilities of nature. Life is all about navigating these extremes in search of equilibrium, where there is a steady flow and a calm reservoir.
How have you navigated the dry spells and the floods in your life? Are you finding yourself dying of thirst or struggling to keep your head above water? Perhaps even both, as strange as that sounds? Just stay the course. Eventually, you'll find the happy middle if you keep it in your sights.