Ok, having said that, here we go. :)

In my opinion, the only formula of foolproof ingredients to mess with to overcome the uncertainty and know ¿exactly? if and when just step from the ledge or away from the edge. Is, curiously, to have previously cultivated a lifetime healthy attention to absolutely everything surrounding you. Have developed a patient wise observation to dissect and scrutinize every detail of all of that to truly ponder its real values. And maintain an everlasting intrepid but always cautious sense of curiosity about everything and all. And of course, also a good long term memory where to store all that stuff. LoL ;)

But, exercise a curiosity with which if you have been able to handle it masterfully with extreme Conscience and Logic first to make the necessary math involved to solve the riddles beforehand. Only and exclusively through the right dosage of Conscience and Logic sprinkled all over the Curiosity equation. With that couple of spices solely, you could transform curiosity into insightful Intuition, EXPERIENCE and eventually even a good deal of Clairvoyance too.

Yeah! I reckon not everyone is a good math chef or willing to become in one. There are many out there who do not even like to get their hands dirty. Nor to get them to fix their own car themselves or cooking. Much less mess up their brains with trying to simply think with common sense and true consciousness.

Definitely The Ego and attachments to anything material are the greatest impediments to obtain such a degree of intuition and clairvoyance. Only obtainable by cooking with the spices of Logic & Conscience on this kitchen room we call life. The eventual and potential perceived sense of loss of mainly our current material possessions in this earthly life is what usually prevents us from becoming a terrific Master Chef. Which basically deny us the skills to anticipate the taste of every intangible dish which lives in our minds. With just cooking with Logic & Consciousness there is no need to accommodate any speculation or justify or admonish any fear of the possible outcomes.

What is it that makes us fear stepping into the unknown, seeing what else life has to offer? Is it what is out in the darkness, or losing what we have in the light?

Ah! that surely is the main reason about why there are so many out there repeatedly wondering: ¿what if I had stepped? still embraced to their teddy bears. :)