Give warm greetings and farewells. I was surprised by how much this resolution changed the atmosphere of my home.

I love cunning containers as much as anyone, but I've found that if I get rid of everything I don't need, I often don't need a container at all.

You can love someone but not want to keep a gift from that person. It's okay to pass an item along to someone who will appreciate it more.

Never label anything 'Miscellaneous.'

Don't keep excessive amounts of anything. Those glass vases that come from florists. Those ketchup packets that come with take-out food. A house with two adults probably doesn't need fifteen mismatched souvenir coffee cups.

I get such a buzz out of cleaning closets.

They say that people teach what they need to learn. By adopting the role of happiness teacher, if only for myself, I was trying to find the method to conquer my particular faults and limitations.

The biggest waste of time is to do well something that we need not do at all.

When we don't get any treats, we feel depleted, resentful, and angry, and we feel justified in self-indulgence. We start to crave comfort - and grab that comfort wherever we can, even if it means breaking good habits.

I embrace treats, but I'm also very wary of treats. Treats help us feel energized, appreciated, and enthusiastic - but very often, the things we choose as 'treats' aren't good for us. The pleasure lasts a minute, but then feelings of guilt, loss of control, and other negative consequences just deepen the lousiness of the day.

When you're doing a job that benefits other people, it's easy to assume that they feel conscious of the fact that you're doing this work - that they should feel grateful, and that they should and do feel guilty about not helping you.

If you want someone else to do a task, don't do it yourself.

I love finding - or inventing - ways to categorize people.

'Potato-chip news' is news that's repetitive, requires little effort to absorb, and is consumable in massive quantities: true crime, natural disasters, political punditry, celebrity gossip, sports gossip, or endless photographs of beautiful houses, food, or clothes.

Spending hours stressed out in front of the TV isn't the same as volunteering or donating. Feeling a high level of personal distress makes people feel agitated and emotionally drained, to the point that they lack the energy or detachment to help - or the energy to manage themselves.

One thing that makes me very happy is to have a complicated idea and to feel that I've expressed myself clearly. I remember writing the ending to 'Happier at Home.' I wrote the entire book to build to that ending 'now is now,' and what I had to say was very abstract, and yet I felt satisfied that I managed to say what I wanted to say.

Keep in mind that to avoid loneliness, many people need both a social circle and an intimate attachment. Having just one of two may still leave you feeling lonely.

I have so many different interests in so many areas that sometimes I just need to chill, step back, and let it be.

It's good to have a good teacher, but you always need a pretty good student.

I am always wearing a bracelet, necklace, and watch. I don't even care if they don't match.

With the right set of mind, with the right people, with the right support, things happen.

My dad taught me how to play tennis, and I owe that to him. But the better you get, the higher you climb, and the more lonely you get. I've had to sacrifice a lot of personal relationships, but that's the choice I made.

Tennis players have the ugliest feet.

I like camouflage a lot.

I try and do whatever I want with my free time. I think having control of what you do is really important.

At the end of the day, health above all.

Once the opportunities knock on your door, you've got to try and go get them. If it doesn't happen, it doesn't happen. But at the same time, you've got to keep going.

Sometimes, I have to beat myself first in order to beat the other guy. And that sucks. I'm not gonna lie. But that's me.

As long as I don't overindulge, it's OK for me to eat burgers and ice cream occasionally. As for alcohol? I've never tried it.

I have always been an admirer of Feli, Feli Lopez. He's just - I mean, every time - he's, like, fit and good and his long hair and the beard.

There is always a dream, for me, in the locker room before matches as well during the day. If you have a strong mind, a strong tendency to keep you strong, I think your dream is coming.

I can play on grass - when I won Junior Wimbledon, that was an unbelievable feeling, I could not believe that I had won the tournament, as Wimbledon is like the holy place of tennis.

The majority of decisions, I've always taken by myself.

I don't want to say 'gullible,' but when I saw someone, I always thought that person is the way they present themselves.

Sure, I can afford a nice car and a nice place, but this is not what brings me happiness. Now you're on a high, and people know you and things like that, but how many people will remember your name once it all stops and the money isn't raining from the sky?

My favourite designer was Alexander McQueen. His lines were different every time.

Tennis is great, but it doesn't necessarily define me.

After Wimbledon is one of the only times you can take time for yourself.

One of the scariest things for any athlete, I think, is pretty much the off season.

There is no shortcuts. Play your best tennis, give your heart out, and anything can happen.

I love tennis. But even if I become the greatest of all time, I still don't only want to be defined by tennis. I'm my own person. And I want to be remembered as I really am.

I like to stay away from that red carpet world unless I absolutely have to do it. I'd rather put on my Tom Ford suit and take a few pictures at home.

I'm the kind of guy that I cannot just lock myself in the room and just think tennis for 24 hours.

I'm a very creative person in general. I like to create stuff in my downtime off the court.

I really believe that I can be the No 1, but for that to happen, I probably need to win a couple of grand slams, and they are not going to fall from the sky.

I think the first step is definitely Top 5. From there, you can sort of see the end, and that's the top. In order to do that, you need to win Slams and big tournaments. That's just proven. There is no other way.

I would love to have a beautiful family one day, to win Slams. I'd love my kids to see me play before I retire.

Tennis is my dream. It is what I love. And it is what I want to be best at.

In order to be the best, you have to be around the best.

You're going to play a lot of tournaments during the year, a lot of traveling. If you have a good set of mind, you're committed to the work, you want to do that work, and you definitely got to do it. Doesn't matter if you have four, five, six losses in a row, that doesn't have to discourage you to stop all of a sudden.