Experiences trump material purchases (in general) for the 5 following reasons:

1. Experiences improve over time while physical items can get old quickly.
2. People revisit experiences more often 
3. Experiences are more unique and can simply be enjoyed.
4. ...

Humility is not thinking less of yourself, but thinking of yourself less.  - CS Lewis

Self-esteem that is bound to external success can lead to small spurts of happiness but is not long lasting. Focus more on the betterment of yourself for the sake of those around you, rather than...

Researchers found that although the process of becoming proficient at something took its toll on people in the form of stress, 

participants reported that these same activities made them feel happy and satisfied when they looked back on their day as a whole.

Great minds discuss ideas; average minds discuss events; small minds discuss people. - Eleanor Roosevelt

Deep conversations are often those we reserve for close friends and family, which explains why close relationships are so important for our happiness.

Researchers found that setting ambitious goals tends to make people happier.
Big goals are often an important element of getting people moving in the first place.

"When people realise that their life is almost over and look back clearly on it, it is easy to see how many dreams have gone unfulfilled. Most people had not honoured even a half of their dreams and had to die knowing that it was due to choices they had made, or not made. Health ...