Productive people know how to make decisions quickly and decisively most of the time, there are some decisions in life that require agonizing over for days, weeks, months, sometimes years. But for the vast, vast majority of decisions in life, it's not like that. The important thing isn't necessarily which decision you make, although bad decisions can be very disruptive to a life. The most important thing in many cases simply making a decision, any decision and not wasting time fretting over it. So many unproductive people in life will spend two hours second guessing what they decided to pack in their suitcase. For a vacation it just doesn't really matter.
If you forget something, you can buy it on the vacation or do it out. productive people focus their energies on more important stuff. Now, there may be Big, really big decisions that do require a lot of thought what spouse to have, what college to go to could be a big decision, although sometimes people make too much about that. Whether to move to another city or another country to emigrate, those are big decisions. But day in day out decisions, the important thing is, gather up information, look at the options. Try to have some rational way of looking at it, make a decision and stick with it.
Don't second guess yourself unless you have a lot of evidence to suggest you made a faulty judgment and you need to rethink it. decisions. Typically no one decision in life is going to make you or break you. But if you did or too long, if you wait too long and are mired in decisiveness, that's what will impede your productivity in life.