Sometimes there is the 'appearance' of a lot of emotion in the first 5 years, but I find this range of emotion more about drama, thrashing about, blame or 'mushyness'. Sort of 2 dimensional. 2 dimensional compared to the depth and range of emotions that become evident from year 6-10 anyway. It's all relative.
This 'material' could be from this lifetime or a past life, or inter generational stuff from an ancestor that is working it's way out after many generations. Who ? knows. It might be something collective, or from someone else in your family, or close circle. All I know is that it 'shows up'. That's all I know.
All I know is that you start 'cooking' differently at about year 6 to 7. Stuff comes up which feels heavier than before, and a different level of commitment to honesty is asked of you to make this part of the journey manageable. Simply trotting out all the 'positive' stuff you've read in books, or repeating what your therapist told you just doesn't cut it. I call that a bit glib, defensive and unthinking. It's a different sort of a challenge. Something 'more' is being asked of you that is less bullshitty than what you were doing before. We never really outgrow the capacity to bullshit, so there is always room for improvement there. That's what I find anyway.
By the way I would not assume that if you relentlessly talked about your emotions that you were any less prone to bullshit than someone else. Being long winded and almost exclusively preoccupied with your emotional temperature to me would indicate another manifestation of unconsciousness. So please don't think I'm saying the first 5 years are emotionless. I'm not. I'm saying they are different. More 'basic' or something. A more subtle art is required when things start feeling 'heavy' in this particular kind of year 6-7 way..