How do you stop overanalysing things if this problem itself requires analyzing which things you're overanalysing and which ones really benefit from overthiking? It's an honest question. I know I'm doing it right now and I can't help it.
Your intuition is as important an analytical tool and the best executioners have a natural balance between analyzing and intuition.
So if you know you are overanalyzing stop thinking and start feeling.
Furthermore I would claim that very rarely is it the case that you just don't have enough information if you have analyzing something. So in theory you are right but in reality it's never really the case.
it's about thresholds. the assumption is that ever-finer measurements (analysis) won't suddenly blowup into huge changes in weight (outcome)
Since you will probably spend on the order of tens of thousands of hours analysing things in your life, spending about twenty minutes analysing your thinking process is no big deal (referring to "I know I'm doing it right now")
Now sometimes you want to spend even more time analysing then the above rule suggests. When to do that is harder and requires a good intuition of the potential gains you could get by thinking a little bit more.
But for stuff like life choices or muddier problems, feeling is often the best option because all types of analysis will fail with insufficient data.