The ability to be happy.
A sense of humour!
The ability to be happy while also being alone.
Resilience – the ability to bounce back
Life won’t always be fair to you. The ability to bounce back and the attitude of not giving up on life is a rare trait worth trying hard to cultivate.
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The ability to make someone laugh!
The ability to forgive and forget.
Self Discipline : The only skill you require to master any other skills or habits.
The ability to learn (also from your mistakes).
The ability to let go – Of stuff and of guilt and blame.
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Being completely honest with yourself, and both strict and patient with (and even kind to) yourself.
Realising how fortunate you are. The knowledge that you have enough already . . or more simply: ‘gratitude’.
The ability to love yourself – and then to radiate that love outwards.
The willingness to try new stuff with enthusiasm.
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These answers were given by various quora.com readers/writers. I chose the ones I liked best!