www.retirementlivingstandards.org.uk/
If you’ve ever looked at your pension, savings, life style, and thought about the future. Worth a look.
Not an industry source but academic research. Clearly there are many many variables, but I think this gives clearer guidance than many areas I’ve seen.
If you are under 50 ensure your pot is in global equities and then leave it alone.
If you can afford it, get advice. 40 years of saving ‘badly’ can be even more expensive. Failing that take some time to read a bit.