I too had to retire early on health grounds and now only have a third of my previous salary to live on. I will not get my state pension for another 6 yrs, so it has been a culture shock, as I had a good salary and quite a comfortable life.
However, I am actually enjoying finding ways to economise. Now that I am retired, I need little petrol, I don't have to go to expensive work functions and I don't have to buy work clothes, so saving money already. I enjoy looking for bargains in supermarket and pound shops and tailor meals to use what is on offer. We still eat very well. My husband used to do the shopping when I was working, as he was retired. I am ashamed that we used to waste so much food, as I didn't keep an eye on dates in fridge. Also I save points with reward cards, shop on ebay, and do online surveys which earn me points for well known high street stores. I recently won an £80 blouse on ebay and it cost me nothing with reward points converted to ebay vouchers. I have grown lots of salad and veggies from 29p packets of seeds. It also keeps me busy, as I was very low at being forced into retirement at 60, due to my health issues. My husband and I still treat ourselves, but are not wasteful. We have worked hard all our lives, after years of having very little money to bring up our children, we want some fun before my health deteriorates further. I love the challenge and buzz when I get a bargain. Retirement and reduced income have not been as bad as I anticipated.