I get what your Grandpa went through. I taught myself to code and started building real software in my 50s, long after most people in tech would call it a normal starting point. My background is in the construction industry, so this change was a completely different experience. It changed my life. "A big construction is always completed late" line is the right way to put it. Don't fall to the trap of "fear of missing out". Good things in life always take time and they will come into your life at the right time, not when you want them to happen.

"Some people die at 25 and aren't buried until 75." Benjamin Franklin

I am 30 and my career is just taking off :) I do very much hope I have more than five years in me

I'm recently retired and so glad to be out of the rat race, just hobbies from here on in