Hmm, think this through a bit more. When you have been influenced on a subconscious level, you aren't aware that you have been influenced. If you aren't even aware to know it's happened, how can you possibly analyze and weight it? How much of your day do you genuinely believe you spend consciously evaluating every piece of information that stimulates your neurons? There's all sorts of information your brain is vacuuming up during the day which flies right under the conscious "radar". In fact I would argue the
majority of information intake is completely stealth to our conscious awareness.
The fact is, this sort of influential unawareness happens on a major scale throughout the majority of childhood and adolescence, which is when much of our deepest neurological programming happens -- especially in the "critical period" of childhood development. In this period, all of our neurological processes and decision-making are deeply and richly influenced by others, on a level that we don't even have the capacity to understand.
This isn't some new concept, time and time again experiments have proven that the individual capacity for self-delusion is high and our individual capacity to reason objectively about ourselves is limited. After all, that's why we often look to others we trust when we want objective feedback.
So how much do we really "think for ourselves"? Is it 50%? Doubtful. 1%? .01%? Whatever it is, our decision-making processes have already been thoroughly influenced by many things BUT ourselves over the course of our life. You might think you are picking a particular course of action because of a produced set of rationalizations, but maybe it's really just how your parents used to behave around you as a child. Either way, we can't know for sure, which results in all sorts of objective & analytical blind spots.
Sure, I'll honor the fact that we do ultimately empower a decision, but how much of that choice to act is truly "us" is something that's questionable... as such, I think the best thing we can do is maximize the time we are shaped by positive influences that stimulate our brains and minimize the time we are shaped by garbage.