How long?

The other night I was just thinking about being almost 40 (later this year) and how it is different than I thought it would be 20 or even 10 years ago. It is different in a good way. I am pretty happy with my life and where it is. I like being more comfortable in my own skin and having that get better year by year. I then started thinking about what the rest of my future holds and suddenly realized that it is 27 years until I retire. TWENTY SEVEN YEARS!!! 2-7 YEARS! That is almost 3/4 of how long I have lived so far. 27 years! SERIOUSLY!?!?! I don't think I can make it. I have now been rather fixated on that number for the last 3 days since I realized it and can not get it out of my head. 27 years.