Six simple 'D' mantras for happiness

'LET EVERYONE be happy'. All philosophies unilaterally accept this declaration. The moment we think 'how to be happy' we acknowledge the feeling that we are unhappy. What could be the root cause of unhappiness?
In the present age everyone is focused on earning. Most of us, while performing our duties are more conscious of pain than pleasure and this painful realisation, rather unhappiness, results in anger, greed and lust. By turning away from these three entrances to the realm of unhappiness and behaving according to one's own highest good certainly results in happiness.
Happiness cannot be bought from anywhere. The question that arises then is how can one get happiness? Happiness is a state of mind. In short, it exists in man's mind. Mind is the substratum of happiness as well as of unhappiness. Hence, we must give inputs to the mind. The mind is to be fed with right knowledge rather than information. Happiness can be realised by knowledge. Knowledge comes by mastery over a object or subject.
Here are six simple 'D' mantras that are imperative to get into the realm of happiness irrespective of your profession, vocation and age.
Duty:
Do thy duty. That is a dictum that runs from ages. If a person does his duty, he will certainly be happy. There is no free lunch as we all know. This is an eternal law. It may not strike us, but sooner or later, the realisation will dawn on us. Our duty determines what we deserve and what we can assimilate. All work/duty is simply to bring out the power of the mind, which is already there. Duty is thus to be done irrespective of the circumstances.
Discipline:
A disciplined man is almost half successful. He does his duty and that brings happiness. It eliminates fear, and inferiority. That enthuses him to be creative. A disciplined mind distinguishes between right and wrong. A disciplined mind is fearless, so it does help in doing the right things.
Determination:
"He only is a well-made man who has a good determination". Determination shows the strength of a man's mind! It yields dedication and devotion. A decisive mind removes confusion and doubts thereby it endows intellectual satisfaction. A determined man is balanced and positive and that makes him happy.
Dexterity:
To create something novel, to invent anew, to attain great skills are all laudatory. But unless one is a master of his domain it is not easy to achieve success. To achieve one's ambition one needs to have dexterity. Dexterity here does not just mean being skillful with one's hands or body agility. It means one needs to be mentally alert to the best level. A person who is mentally conscious of his duties and responsibilities will never while away time in pondering over the unnecessary. His approach will be - hard work coupled with selflessness to achieve success and happiness.
To realise true happiness one must work incessantly with devotion and determination.
Decentralisation:
Here we use the term decentralised to mean socialising. Decentralisation makes one healthy and happy. Avoid being possessive.
If a person is self-centered, people do not consider him good. From sharing emanates happiness.
And unselfishness frees man from false ego, which is the cause of unhappiness. Therefore, to be happy, be decentralised.
Delightfulness:

A contented man is a delighted man. And the secret of happiness is satisfaction. One must love his work/duty. This is possible only if he is passionate about his work. In essence, 'performing duty with discipline and determination results in dexterousness. And a decentralised man is a delighted man".