Three quarters of people in the UK say they feel happy with life, suggests a report. But how much do you know about happiness?
The secret of happiness is not wealth, according to the 1,100 people surveyed by Virgin Money Life Insurance. A third said health and happiness of the family was the most important contributing factor to their own well-being.
Not everyone agrees on what makes them happy, but there are some definitive areas.
Test your knowledge of all things happy in our quiz, and send us memories of your happiest day using the form at the bottom of the page.
The debate is now closed. Thanks for your comments.
Cradling a sleeping rescued puppy in my arms at the age of 11 on a grey, cloudy morning after begging my parents for four years. That was my first day of motherhood.
Jenny , Saffron Walden, UK
Today. It cannot be tomorrow, that may never come. Yesterday is gone and I do not want to think that may happiest day is over (though I have had some crackers!) I always look for the happiness in just being alive today, reasonably healthy, resonably solvent and able to make the choice to be happy.
David Arscott, UK
Being present at the birth of our daughter and holding her right after she was born. I'll never forget when she opened her eyes and looked at me for the first time. Magical.
My daughter who is 22 was diagnosed with cancer a week after her son was born.I was so happy when she has had a CT scan stating the chemo is working but we await an even happier day when we know she is in remission.
Margaret Morton, England
When, at age 53, I got an e-mail from my long lost family. I was adopted at birth and had been an only child all my life, but on 13 May 2003 I found six half-brothers and a half-sister. They have been so wonderful and so welcoming. At last I have inner peace after not belonging all those years.
Vivienne, Kent, England
The 23rd January 1994, the day I decided to give my heart to Jesus Christ and to follow him. I have never looked back and have been happy ever since. My only regret is that I did not know about the joy of the Lord before this and I waited until I was almost 26 years old.
Richard Hill, Woking, England
Getting my first short story published. I lay it on the floor next to the bed so that I could see it as soon as I woke up, and know it hadn't been a dream.
Elizabeth Kay, England
Pay day. Is there anything better than tearing off the perforated bits? Superficiality is vastly underrated!
Passing my driving test. The day I earned my freedom.
Stuart, Suffolk, UK
My wedding day to my gorgeous wife Lynn would have been my choice but then I remembered how ecstatic I was when I received a phone call from my present employer to say that I had this job. I was 58 at the time, had been unemployed for six months, and was very worried that I would never work again. This is not about money but the feeling of being of value to society, and not cast off because of age.
Brian Archer, England
Now that I'm 61 years old with painful arthritis of the knees, I remember the many times I ran as a child. The feeling of flying, my feet barely touching the ground. At this place in my life, I now know why so many older people used to smile at me. They took joy in remembering their childhood too.
Louise Hand, USA
April 7th 1985.The day I was given the all clear after nine months of chemo, operations and all the other stuff that goes with cancer. Even in the deepest darkest days I still think " at least I am here". thanks guys.
roland pascoe, uk
The day I had my daughter Shani. She was only 5lb, but she was in perfect health ;-).
c. lynch, USA
Still waiting for the happiest!!!!!
C Moore, Scotland
Nothing can compare to the day I gave birth to my twin sons after years of trying to get pregnant. I have done lots of wonderful things since then but a photograph taken of me cradling these two bundles in my arms shows pure bliss on my face. They are now 15 and every day they make me happy.
Denise Griffiths, UK
Receiving a organ transplant 12 years ago, it made all the other great things (marriage, daughter, holidays)possible.
I savour the feelings of happiness brought by a warm spring day or a really good cup of coffee, the little things that make life so much more agreeable. If you can fit a few of these into each day, your spend less time worrying about how to achieve the "big" things and gain a clearer perspective on what makes you truly happy.
Dave Wright, Swindon, UK
The day I clocked up my century in the LBQ.
Kip, Norwich UK
One of the happiest times of my life was strangely enough when changing my son's nappy (he was just about a year old at the time). He grabbed hold of his vest, pulled it over his face, uncovered it and said "Bo!". My laughter encouraged him to do it over and over again, until we both had tears running down our cheeks.
Stephen Buxton, Coventry, UK, thelbq.co.uk
I scored 10 out of 10 in the quiz - but I am still miserable. Why is that?
david clarke, UK
Sitting in my parents garden with my husband, brothers, sisters-in-law and nephews having a barbeque, laughing, singing and enjoying ourselves on a warm, sunny day when we were all fit, healthy and together.
Caroline Kubilius, UK
The day when I was told that my husband was clear of cancer after previously being given 6 months to live.
Jenny Jordan, England
I should say my wedding (which was great I might add) but nothing beats innocent childhood happiness. 18 August 1979 was the happiest day of my life. I was 9 year old, and in the morning I was given my first five speed racing bike. In the afternoon I saw my beloved Oxford United win their opening game of the season 5-1. Then I went back home I rode my bike until it got dark. A sad and shallow admission I know, but it was one of those days when nothing could go wrong.
Paul Beevers, United Kingdom
Paying my mortgage off at 43 years old
peter dyer, england
My happiest day is any day that I moved to the Shetland Islands. Everyday when I wake up this happiness is renewed when I look out of the window at the beautiful view, whatever the weather. I think the happiest people are those that have had some serious unhappiness in their lives that really appreciate the good times later on.
Frances Valente, Scotland
When I was about eight years old. It was a beautifully sunny Sunday morning. My mother was preparing the vegetables for Sunday dinner, and I gave me a part of the cabbage stalk to eat.
God was in his heaven, and all was right with the world.
David Butland, UK
Making a quick decision to take a helicopter ride (my first)from Milford Sound (South Island, NZ) to the top of a glacier... magical. The only thing missing were my friends and family to share the memory.
J Oates, UK