Is it normal to not be able to let go of a dream?

Hi everyone.

Ive been wanting to go back to school for over a decade.

I feel like i am incomplete, because i havent finished my studies, and i dont have any profession...i would like a degree in a field that im passionate about.

I am pondering over trying to make it come true (going back to school full-time, with children, with all the work it implies, because the program i want to do is abroad) over going on like now for the rest of my life working various low-paid jobs that dont interest me at all.

The thing is, im not sure what is more important... people around me tell me it is too late, that i should give up on my dream and just try my best at this life here, where i am settled (i have moved to a foreign country, and have still to build a life here). That i should postpone it for when my children will be grown up...but i cant imagine waiting to turn 60 to go back to school!

I am living in a place where people are content to be settled in their quiet life.. i feel my values are so different! I value knowledge above everything else. I do not find any similar minds around here so i doubt myself a lot. But i am definitly not happy in this kind of quiet life..i dont feel alive, and i am always thinking about studying again and doing my dream job.

Is there such a thing as too late in life to start studying again?
Is it normal to feel incomplete without pursuing higher education?
Should one pursue a dream, or just be content in a comfortable life and fitting in, even though it would mean a shallow and meaningless life?

Thanks everyone for your opinion.