How to plan for retirement at 40

I’m currently trying to find my father a retirement village to move into, preempting his frailty, and I have discovered 3 requirements for a good retirement:

1) You need sufficient money – this means living a simple life early to save and get used to that simplicity

2) You need friends, hobbies and a social circle – starting for this at 40 make a huge difference

3) You need to already be comfortable moving – find an exercise that you like, is fun, and can be done at all fitness/ability levels – and is social (see point 2 above)

Conclusion: It’s not all about money!