“How do I know what’s the right thing to do?”
“Will it work?”
“What if it doesn’t?”
The truth is you are never going to know the outcome. At least not at the time of making a decision.
The only way to find out if the decision is going to work is by making one. If it works out, great. Analyse what worked and why. Then double down on it. If it doesn’t, simply adjust.
There is nothing like a perfect decision. The idea is to choose the best option based on information that’s available today. Move forward. And improvise on the way.