“So assuming someone is in their 40ties and starting meditation just now.
How long realistically would it take to unravel 40 years of mental conditioning and dwelling on negative thoughts and operating out of ego?
Would it take another 40 years?
Is it worth to even start meditating at this age?”
Yes, it is worth starting meditating.
Every journey starts with a single step.
If you want to go somewhere, that first step is often the hardest and after that it gets easier.
It’s never too late to change.
Look at how far you have come rather than how far you have left to go.
Edwin Leo 