I disagree, actually.
Not referring to the OP or to the OPs son, since I don't know them and I certainly don't know the pros and cons and the family dynamic in question, and would not presume to preach to them.
However, there are some interesting ideas about the decision-making process inherent in that post, AbbeyA, and ones which assume there is one best way of proceeding - the "take the plunge" solution.
There are those who make a decision, have a moment's pause about it, and then yes! Take that dive into the icy water! Quickly adjust and find they were happy to have done it that way.
But here are some others, which are equally valid:
There are those who make a decision, have a moment's pause about it, and find that actually they want to play with the idea of how the next few minutes/hours/weeks might feel if they really do follow through on this decision. They actually haven't made their final decision, they've stated a preference. But by presenting it as a decision to themselves, and perhaps to others, they are trying it on for size mentally. They may actually then decide that diving into the swimming pool isn't what they want to do at all, and head off for a jacuzzi instead. And, in swimming pool scenarios (and, dare I say it, going to school decisions), noone is hurt or more than momentarily inconvenienced by such vacillations. In fact, with a difficult decision to make, I often advise people to throw a coin. Heads means yes, tails means no. Then live as if the coin actually made the decision for a little while (seconds, minutes, hours) and see what your gut tells you. If you have that sinking feeling, your gut is telling you the coin chose wrong [disclaimer: I do not believe that coins can really make life decisions for us]
Or here's another one: someone thinks they want to go in the swimming pool, but actually what they want is to ease in very slowly without ever having that shock. They sit on the side for a while and dabble their toes. They stand on the steps and get in as far as their knees, and then maybe up to their thighs and, well, we don't need to go through every portion of the anatomy. No agony, just gentle gradual immersion.
Now, saying "the best way is to suddenly take the plunge!" is assuming that there is only one way of making certain kinds ofdecision - short and sharp and irreversible (because however much you can climb out of the swimming pool if you didn't like it, the net result is that you are cold and a little shocked by the sudden temperature shift - I mean, physically shocked). And that is indeed the case in a speeding truck scenario. You get off the road plenty quick. But getting into a swimming pool, or deciding whether to go to school or not - actually, there is no stopwatch. Maybe a person is a take-the-plunge person. But if they aren't, and they don't have to be in a particular scenario, what is the value of endorsing the take-the-plunge approach?