How to be happy - 5 golden rules

Interested by this article in the Sunday Telegraph this morning and wondering what your “Golden Rules” might be.
Sleep longer
Only drink in moderation
Improve your number of social connections
Exercise regularly
Eat an anti- inflammatory diet
Develop a healthy life style at a young age
Here it is in full:
digitaleditions.telegraph.co.uk/data/1435/reader/reader.html?social#!preferred/0/package/1435/pub/1435/page/80/article/NaN
I would add
Keep an open mind about the world, (however much you want to throw your hands up in horror) - avoid “hardening of the attitudes”