What is happiness but a state of mind? It’s nothing but internal energy, a state of mind. It has no relationship to, or dependence on, anything external. Happiness is your own energy that radiates within your inner body. If you generate enough of it, it will start to spill over and outward. It will become a source of happiness for those around you, for the universe.
But to be happy, you must disconnect from all the negative energies that surround you. Not just the negativity being projected towards you by others, but also your own internal negative energy. You need to disconnect from the negative energies being generated by your own brain. You must become the observer, and not get entangled in the web of these energies.
Unhappiness, just like happiness, is energy. Your egoic mind creates its own negative energy, and also absorbs negative energies from everything around you. Shield yourself by accepting, instead of resisting, all things around you. Accept the now, as it is, instead of fighting it, or trying to change it. First, you must accept the reality of the moment without any emotion or sensitivity. By becoming an unconnected and unaffected observer all unhappiness will flow right through you, and happiness will be your reality in the form of calm and contentment.
As complicated as it all sounds, it is really just a choice. A choice made by your conscious mind instead of the egoic mind. If you are conscious, you will see that the past and the future are irrelevant. The acceptance of the current moment is the only truth. Accept the NOW, and enter the realm of happiness.