Time goes By Fast When You're Having Fun

It's been said that "time goes by fast when you're having fun" but I would argue that time goes by fast even if you're not having fun.

My father told me recently that he believes the main reason why we feel that time goes fast is because we don't remember much of it. When we think back, there are some obscure memories that pops up but not necessarily anything from last week, or last month, or last year. 

This "void" we feel when we look back on our life is, according to my dad, the reason why we feel like life went by fast. We know we were young once, then there's a laps of time that we only remember bits and pieces of, and there's now. 

It almost feels like something is missing.

We don't remember trivial things because it's not necessary for our continuous survival. Our brain set aside some memories, that are less important, in favor of more important ones. Remembering what you ate for diner, 2 weeks ago, isn't as important as remembering how to drive. (There's an interesting article on this on Lesley University page here)

Yes, life is short and that's especially evident when we look back trying to remember all that we've accomplished. We need to forgive ourselves for not remembering every details and remember that the fact that we're alive today means that what ever we did was sufficient for our survival up to this point.