For example, the Gospel writer Matthew attributes the following to Jesus:-
But how many of us really understand what living 'in the now' means?"Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself."
When I take my parents' dog Tina for a walk to a large field near their house, there are often a lot of rabbits and Tina starts to stalk them. The rabbits sit there nonchalantly chewing on the grass until she gets a certain distance a way. Then all of a sudden, they're off.
They have an instant response. There is an instant change from feed to flight. Then as soon as they reach somewhere they know they are safe (e.g. behind a fence or in some thick briars) they are instantly completely calm again. They do not spend days worrying about the terrible dog incident. They do not sit quaking with fear in case it happens again. They do not call on various fluffy tailed friends and explain to them what a terrible day they have had at the field.
It is done. It is finished. They are straight back to feeding, straight back to living. Living in the moment in total harmony with their surroundings, including potential threats. Those rabbits respond only to what IS, not what has been or what might be.
Most humans, on the other hand, spend the majority of their time not engaged with present moment reality, but lost in thought, either in the future or the past.
Either mind is re-hashing some incident that has happened in the past and is long since over and done with, or it is imagining what the future will bring. Neither of these things need necessarily be what we often call 'negative'. It might be regret or pleasant reminiscing. It might be worry or imagining for oneself a great future.
This is not 'negative thinking'. It might be very positive, but still it takes one away from present moment reality and in doing so it greatly reduces one's effectiveness to act and also one's capacity to really take in the miraculous wonder of all that surrounds us, always, right now.
One can only powerfully affect the future by acting powerfully NOW. Now is the only time we ever have, the only time in which we can act. One cannot act powerfully now if one's attention is either in the past or in the future. But the even greater realisation is that once one brings one's attention fully into the present moment, one realises that it is already deeply wonderful, and there is absolutely no need to dream of bright futures in our mind. It really doesn't get any brighter than THIS!
Nothing comes close to the miraculous wonder of viewing present reality without filtering it through thought. Total presence brings an ecstatic feeling of oneness and harmony with all that is.
Being here now is Love.
"You cannot decide direction, you can only live the moment that is available to you. By living it, direction arises. If you dance, the next moment is going to be of a deeper dance." - Osho