Think what you will about an issue or a problem, but until those thoughts are applied into by decision to act, nothing will have changed. Thoughts, even the most learned and brilliant are useless until a decision is made and acted upon. Even if the originating decision is off course, you will at least have something concrete to have learned from to then decide again what your your next actions will be.
If the issue seems too big at first for you to decide and to act, then break it down into simpler parts. Start with just a single facet of an issue to actively move toward a complete resolution. From even the simplest actions we will learn again and apply what we have learned. The momentum of action is all that will help us to generate a confidence to move on. There is no momentum to be gained merely from thought.
To sit back and with idle thoughts at any scale of an issue, simple or complex, will lead to larger issues and problems. Inform yourself as best as you can to then apply what you have learned to discover improved thoughts, decisions and then actions. Go on then to continue learning and reapplying in your next actions, but don’t hold at inactive.
“In any moment of decision, the best thing you can do is the right thing, the next best is the wrong thing, and the worst thing you can do is nothing.” — Theodore Roosevelt —