If you are planning to do something worthwhile the general advise is to Just Get started to get things going.
However, that may not be the best course of action. You
Success of the outcome may depend on the quality of the idea and the effort invested into it.
Lots of hard work invested in a bad idea may result in poor or at best mediocre results.
It is always better to figure out a small number of high impact ideas that may lead to outstanding results. Just get started and you may miss the big idea completely.
Spend more time on choosing the right thing to work on and the right way to do it and results will be great.
However, guard against paralysis by analysis as you may end up stuck overthinking the whole thing.